commonplace vs unglamourous

commonplace is a noun but unglamourous is not a noun.

Word	Noun	Adjective	Verb	Adverb
commonplace	Yes	Yes	No	No
unglamourous	No	Yes	No	No

As adjectives, commonplace and unglamourous are synonyms defined as:

commonplace and unglamourous: not challenging; dull and lacking excitement

Other synonyms of commonplace include humdrum, prosaic, unglamorous.

commonplace (noun)	unglamourous (noun)
a trite or obvious remark

commonplace (adjective)	unglamourous (adjective)
not challenging; dull and lacking excitement	not challenging; dull and lacking excitement
repeated too often; overfamiliar through overuse
completely ordinary and unremarkable