1: καταργέω
(Strong's #2673 — Verb — katargeo — kat-arg-eh'-o )

lit., "to reduce to inactivity" (see ABOLISH , where all the ocurrences are given), is rendered "ye are severed (from Christ)" in Galatians 5:4 , RV; the aorist tense indicates that point of time at which there was an acceptance of the Judaistic doctrines; to those who accepted these Christ would be of no profit, they were as branches severed from the tree.

2: ἀφορίζω
(Strong's #873 — Verb — aphorizo — af-or-id'-zo )

"to separate from," is used of the work of the angels at the end of this age, in "severing" the wicked from among the righteous, Matthew 13:49 , a premillennial act quite distinct from the rapture of the Church as set forth in 1—Thessalonians 4 . See DIVIDE , No. 1.