G5446–φυσικός–phusikos

For this cause God gave them up unto vile passions: for their women changed 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 toward another, men with men working unseemliness, and receiving in themselves that recompense of their error which was due.

φυσικὴν phusikēn “natural”

But these, as creatures without reason, born mere animals to be taken and destroyed, railing in matters whereof they are ignorant, shall in their destroying surely be destroyed,

φυσικὰ phusika “as creatures of instinct”