clutter vs fill

clutter and fill both are nouns.

Word	Noun	Adjective	Verb	Adverb
clutter	Yes	No	Yes	No
fill	Yes	No	Yes	No

As verbs, fill is a hypernym of clutter; that is, fill is a word with a broader meaning than clutter:

Other hypernyms of clutter include fill up, make full.

clutter (noun)	fill (noun)
unwanted echoes that interfere with the observation of signals on a radar screen	a quantity sufficient to satisfy
a confused multitude of things	any material that fills a space or container

clutter (verb)	fill (verb)
fill a space in a disorderly way	become full
	make full, also in a metaphorical sense
	plug with a substance
	fill to satisfaction
	eat until one is sated
	fill, satisfy or meet a want or need or condition or restriction
	assume, as of positions or roles
	appoint someone to (a position or a job)
	occupy the whole of