Japan wax vs wax

Japan wax and wax both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan wax	Yes	No	No	No
wax	Yes	No	Yes	No

As nouns, wax is a hypernym of Japan wax; that is, wax is a word with a broader meaning than Japan wax:

Japan wax: a yellow wax obtained from sumac berries; used in polishes
wax: any of various substances of either mineral origin or plant or animal origin; they are solid at normal temperatures and insoluble in water

Japan wax (noun)	wax (noun)
a yellow wax obtained from sumac berries; used in polishes	any of various substances of either mineral origin or plant or animal origin; they are solid at normal temperatures and insoluble in water