Concise Bible Dictionary:
1. σαρκικός, “belonging to the flesh:” applied to the fallen condition of man: to his wisdom (2 Cor. 1:12); and to his lusts (1 Pet. 2:11). The same word is translated CARNAL. In Romans 7:14 it is “fleshly,” morally (the state of a new-born soul under bondage, doing the things he hates); in Romans 15:27 it is “fleshly” physically; and in some passages it is the fleshly or carnal condition of the Christian as led of the flesh. The word occurs in 1 Corinthians 3:1, 3-4; 1 Corinthians 9:11; 2 Corinthians 10:4 and Hebrews 7:16. In most of these passages some MSS read σάρκινος, “fleshy.”
2. σάρξ, “flesh:” in Romans 8:7 and Colossians 2:18 it is “mind of the flesh;” and in Hebrews 9:10 it is “ordinances of flesh.” This Greek word is commonly translated “flesh”.