mossy-cup oak vs bur oak

mossy-cup oak and bur oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
mossy-cup oak	Yes	No	No	No
bur oak	Yes	No	No	No

As nouns, mossy-cup oak and bur oak are synonyms defined as:

mossy-cup oak and bur oak: medium to large deciduous oak of central and eastern North America with ovoid acorns deeply immersed in large fringed cups; yields tough close-grained wood

Other synonyms of mossy-cup oak include burr oak, mossycup oak, Quercus macrocarpa.

mossy-cup oak (noun)	bur oak (noun)
medium to large deciduous oak of central and eastern North America with ovoid acorns deeply immersed in large fringed cups; yields tough close-grained wood	medium to large deciduous oak of central and eastern North America with ovoid acorns deeply immersed in large fringed cups; yields tough close-grained wood