unraveller vs disentangler

unraveller and disentangler both are nouns.

Word	Noun	Adjective	Verb	Adverb
unraveller	Yes	No	No	No
disentangler	Yes	No	No	No

As nouns, unraveller and disentangler are synonyms defined as:

unraveller and disentangler: a person who removes tangles; someone who takes something out of a tangled state

Other synonyms of unraveller include unraveler.

unraveller (noun)	disentangler (noun)
a person who removes tangles; someone who takes something out of a tangled state	a person who removes tangles; someone who takes something out of a tangled state