welter vs clutter

welter and clutter both are nouns.

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

As nouns, welter and clutter are synonyms defined as:

Other synonyms of welter include fuddle, jumble, mare's nest, muddle, smother.

welter (noun)	clutter (noun)
a confused multitude of things	unwanted echoes that interfere with the observation of signals on a radar screen
	a confused multitude of things

welter (verb)	clutter (verb)
be immersed in	fill a space in a disorderly way
roll around
toss, roll, or rise and fall in an uncontrolled way