bur oak vs mossycup oak

bur oak and mossycup oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
bur oak	Yes	No	No	No
mossycup oak	Yes	No	No	No

As nouns, bur oak and mossycup oak are synonyms defined as:

bur oak and mossycup 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 bur oak include burr oak, mossy-cup oak, Quercus macrocarpa.

bur oak (noun)	mossycup 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