plonk vs Commonwealth of Australia

plonk and Commonwealth of Australia both are nouns.

Word	Noun	Adjective	Verb	Adverb
plonk	Yes	No	Yes	No
Commonwealth of Australia	Yes	No	No	No

plonk (noun)	Commonwealth of Australia (noun)
the noise of something dropping (as into liquid)	a nation occupying the whole of the Australian continent; Aboriginal tribes are thought to have migrated from southeastern Asia 20,000 years ago; first Europeans were British convicts sent there as a penal colony
a cheap wine of inferior quality

plonk (verb)	Commonwealth of Australia (verb)
set (something or oneself) down with or as if with a noise