From a Lutheran perspective:
Church
Article VII: Of the Church.
Also they teach that one holy Church is to continue forever. The Church is the congregation of saints, in which the Gospel is rightly taught and the Sacraments are rightly administered.
And to the true unity of the Church it is enough to agree concerning the doctrine of the Gospel and the administration of the Sacraments. Nor is it necessary that human traditions, that is, rites or ceremonies, instituted by men, should be everywhere alike. As Paul says: One faith, one Baptism, one God and Father of all, etc. Ep 4:5-6.
Article VIII: What the Church Is.
Although the Church properly is the congregation of saints and true believers, nevertheless, since in this life many hypocrites and evil persons are mingled therewith, it is lawful to use Sacraments administered by evil men, according to the saying of Christ: The Scribes and he Pharisees sit in Moses’ seat, etc. Mt 23:2. Both the Sacraments and Word are effectual by reason of the institution and commandment of Christ, notwithstanding they be administered by evil men…
(From the Augsburg Confession)
Salvation
The recovery from sin and death to eternal life and communion with God by the obedience and sacrifice of Christ, who is therefore called the Savior, Redeemer, Messiah, Rescuer, etc.(Jb 19:25; Is 59:20. Mt 20:28; Ro 3:24; 1Co 6:20; Ga 3:13; 4:4–5; Ep 1:7; 1Ti 2:5–6; 1Pt 1:18). The subject is sinful mankind, under guilt and the curse of the Law and the power and dominion of the devil, liable to death and eternal punishment. Salvation is the result of the sinner receiving the Justification freely offered to all by the Grace of God, but is not “cheap.”
(Edited and paraphrased from the Christian Cyclopedia)
Grace
Good will and favor shown to one who can plead no merit; particularly, the love of God in relation to the sinner as such. There may be love, but not grace, between equals or between a judge and an innocent person. Grace implies mercy or compassion for one who has by every right forfeited his claim on love. Such is the grace of God to the sinner. It is “free” because it is not grounded in any worthiness of man (Ro 11:6). Any admixture of merit, as constituting a claim on mercy, destroys the very essence of grace. Merit and grace are mutually exclusive.
Grace is universal. The entire world is its object. God became incarnate in Christ for the benefit of all men; He died for the atonement of the sins of all; all have been pronounced righteous through His resurrection; the invitation or call of grace is intended for all. No one is excluded from the salvation which grace has provided.
The grace of God is revealed (1) in the sending of His Son into the flesh, (2) in the justification of the sinner who accepts Jesus Christ as his Substitute in Judgment, and in the conversion of the sinner, and (3) in his glorification (resurrection, eternal life). This doctrine of grace gives assurance to Christian faith. Its promises are certain.
Grace is resistible, since it is offered to us through certain means [Word and Sacrament]. Scripture constantly warns not to reject salvation.
(Edited and paraphrased from the Christian Cyclopedia)
Worship
In the most basic sense, it’s the thankful human response to God. This is celebrated in the Christian’s daily life through his vocation, through appreciation for God’s Creation, through loving the neighbor, and most clearly through the Divine Service and reception of the Word and Sacraments.
Faith
The act by which one enters into that right relation to God which the all-atoning work of Christ has established for the whole world. The Bible uses many images to portray faith (e.g., coming to Christ, Mt 11:28; seeing Christ, Jn 14:9; obedient hearing of Christ, Jn 10:27; keeping Christ’s Word, Jn 8:51; laying hold on eternal life, 1 Ti 6:12).
- Faith as knowledge is the grasp with the mind, or the mental possession of that which is communicated (Lk 1:77; Jn 14:7; 17:3; Ro 10:14, 17; 1 Ti 2:4; 2 Ptr 1:3). This salutary knowledge is not mere intellectual acquaintance (Ja 2:19) or technical knowledge (1 Co 2:14), but a product of divine grace which permeates the whole heart (1 Co 2:12; 2 Co 4:6; 2 Ti 1:12).
- Faith as assent is an act of the will which accepts the exalted phenomena presented to the mind. Hence, the preaching of faith is hortatory, pleading, persuasive in its message (Acts 26:28; 28:23). Since man is by nature dead in trespasses and sins (Eph 2:1; Cl 2:13), his coming to spiritual life is the work of God (Jn 6:29; Eph 2:1–10).
- Faith as confidence means that faith is that certainty, that assurance, which is as great and as firm as though we actually had the promised things in our possession, as though we could see, feel, and handle them, as though we had not only the prospect but the substance of these things (Jn 17:8; Ro 4:18–21; 8:24; 2 Ti 1:12; Tts 3:7; Heb 11:1; 1 Ptr 1:3, 13).
- Faith is also thought of as a state. In this respect faith is viewed as the continued possession of the gifts and blessings of God, in and through Christ, through an enduring, abiding confidence in His complete and all-sufficient redemption (Lk 22:32; 2 Co 13:5; Gl 2:20; Cl 2:7; 1 Ti 4:7; 2 Ti 4:7). Christian faith can increase in intensity (2 Co 10:15) and extension (1 Co 1:5).
True faith is a living, energizing, motivating power that propels and urges to action (Mt 17:20; 1 Jn 5:4–5), and conforms the Christian’s will to God’s.
(Edited and paraphrased from the Christian Cyclopedia)
Works
The fruit of a saving faith. Unnecessary for Justification, but a component in Sanctification, which pours out from Justification.