Marques has helped already, but here is what the words suggest in Strongs Concordance and also from Gill's commentary.
Php 4:21 SaluteG782 everyG3956 saintG40 inG1722 ChristG5547 Jesus.G2424 TheG3588 brethrenG80 which are withG4862 meG1698 greetG782 you.G5209
Humans are refered to as a saint, when we repent and turn to God.
From ἅγος hagos (an awful thing) compare G53, [H2282]; sacred (physically pure, morally blameless or religious, ceremonially consecrated): - (most) holy (one, thing), saint.
Php 4:21 Salute every saint in Christ Jesus,.... Meaning at Philippi, whether rich or poor, lesser or greater believers, common saints, as well as the officers of the church, bishops and deacons; who were in Christ by electing grace, and as their covenant head, and representative from everlasting, and which was manifested and made known by their conversion and the effectual calling:
Angels are heavenly messengers.
Act 5:19 ButG1161 the angelG32 of the LordG2962 byG1223 nightG3571 openedG455 theG3588 prisonG5438 doors,G2374 andG5037 brought them forth,G1806 G846 and said,G2036
From ἀγγέλλω aggellō (probably derived from G71; compare G34; to bring tidings); a messenger; especially an “angel”; by implication a pastor: - angel, messenger.
Act 5:19 But the angel of the Lord,.... Or "of God", as the Arabic and Ethiopic versions read, whether Michael, as some have thought, or Gabriel, or what particular angel, is not material to know. However, it was a good angel, an elect angel, one of those ministering spirits sent by God to minister to the heirs of promise; one of those angels that excel in strength, as appears by what he did: for he
luv & hugs,meee