funambulist vs tightrope walker

funambulist and tightrope walker both are nouns.

Word	Noun	Adjective	Verb	Adverb
funambulist	Yes	No	No	No
tightrope walker	Yes	No	No	No

As nouns, funambulist and tightrope walker are synonyms defined as:

funambulist and tightrope walker: an acrobat who performs on a tightrope or slack rope

funambulist (noun)	tightrope walker (noun)
an acrobat who performs on a tightrope or slack rope	an acrobat who performs on a tightrope or slack rope