blur vs film over

blur is a noun but film over is not a noun.

Word	Noun	Adjective	Verb	Adverb
blur	Yes	No	Yes	No
film over	No	No	Yes	No

As verbs, blur and film over are synonyms defined as:

Other synonyms of blur include glaze over.

blur (noun)	film over (noun)
a hazy or indistinct representation

blur (verb)	film over (verb)
become vague or indistinct	become glassy; lose clear vision
make dim or indistinct
make unclear, indistinct, or blurred
make a smudge on; soil by smudging
to make less distinct or clear
become glassy; lose clear vision