G5446–φυσικός–phusikos

For this cause God gave them up to vile affections. For even their women did change the natural use into that which is against nature:

φυσικὴν phusikēn “natural”

And likewise also the men, leaving the natural use of the woman, burned in their lust one towards another; men with men working that which is unseemly, and receiving in themselves that recompense of their error which was meet.

φυσικὴν phusikēn “natural”

But these, as natural brute beasts, made to be taken and destroyed, speak evil of the things that they understand not; and shall utterly perish in their own corruption:

φυσικὰ phusika “as creatures of instinct”