"Principalities
In the New Testament Principalities refers to one type of spiritual (metaphysical) being which are now quite hostile to God and human beings. (Rom 8:38; 1 Cor 15:24; Eph 1:21; 3:10; 6:12; Col 1:16; 2:10, 15) Along with the principalities are the powers (Rom 8:38; 1 Cor 15:24; Eph 1:21; 1 Pt 3:22; 2 Thes 1:7); and cosmological powers (1 Cor 15:24; Eph 1:21; 3:10; Col 2:15);Dominions (Eph 1:21; Col 1:16) and thrones (Col1:16). The clarity of the New Testament witness helps see that these beings were created through Christ and for Him (Col 1:16). Given their hostility to God and humans due to sin, Christ's ultimate rule over them (ibid) expresses the reign of the Lord over all in the cosmos. This is the Lordship of Christ, which reveals God's tremendous salvation in conquering sin and death at the cross, and now takes place in the Church. (Eph 3:10)"
from :
https://www.catholic.org/saints/angels/angelchoir.php