cover up vs gloss over

cover up and gloss over both are verbs.

Word	Noun	Adjective	Verb	Adverb
cover up	No	No	Yes	No
gloss over	No	No	Yes	No

As verbs, gloss over is a hyponym of cover up; that is, gloss over is a word with a more specific, narrower meaning than cover up:

Other hyponyms of cover up include hush up, sleek over, whitewash.

cover up (verb)	gloss over (verb)
hide from view or knowledge	cover up a misdemeanor, fault, or error
	treat hurriedly or avoid dealing with properly