1: (adj) Of goods or commodities; freely exchangeable for or replaceable by another of like nature or kind in the satisfaction of an obligation

2: (n) A commodity that is freely interchangeable with another in satisfying an obligation

3: (n)(Slang) Items which are simultaneously the product of fungal growth--typically bluish, small and phallic in appearance--and devilishly fun.

Got the covid-19 vaccine

Term used to describe something that is easily changeable and/or open to change - unlike a certain DBA manager I know.

When two or more assets are interchangeable.