whitewash vs gloss over

whitewash is a noun but gloss over is not a noun.

Word	Noun	Adjective	Verb	Adverb
whitewash	Yes	No	Yes	No
gloss over	No	No	Yes	No

As verbs, whitewash and gloss over are synonyms defined as:

Other synonyms of whitewash include hush up, sleek over.

whitewash (noun)	gloss over (noun)
a specious or deceptive clearing that attempts to gloss over failings and defects
wash consisting of lime and size in water; used for whitening walls and other surfaces
a defeat in which the losing person or team fails to score

whitewash (verb)	gloss over (verb)
exonerate by means of a perfunctory investigation or through biased presentation of data	cover up a misdemeanor, fault, or error
cover with whitewash	treat hurriedly or avoid dealing with properly
cover up a misdemeanor, fault, or error