flowers of zinc vs philosopher's wool

flowers of zinc and philosopher's wool both are nouns.

Word	Noun	Adjective	Verb	Adverb
flowers of zinc	Yes	No	No	No
philosopher's wool	Yes	No	No	No

As nouns, flowers of zinc and philosopher's wool are synonyms defined as:

flowers of zinc and philosopher's wool: oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment

Other synonyms of flowers of zinc include philosophers' wool, zinc oxide.

flowers of zinc (noun)	philosopher's wool (noun)
oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment	oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment