G5446–φυσικός–phusikos

Because of this did God give them up to dishonourable affections, for even their females did change the natural use into that against nature;

φυσικὴν phusikēn “natural”

and in like manner also the males having left the natural use of the female, did burn in their longing toward one another; males with males working shame, and the recompense of their error that was fit, in themselves receiving.

φυσικὴν phusikēn “natural”

and these, as irrational natural beasts, made to be caught and destroyed -- in what things they are ignorant of, speaking evil -- in their destruction shall be destroyed,

φυσικὰ phusika “as creatures of instinct”