lasso vs lariat

lasso and lariat both are nouns.

Word	Noun	Adjective	Verb	Adverb
lasso	Yes	No	Yes	No
lariat	Yes	No	No	No

As nouns, lasso and lariat are synonyms defined as:

Other synonyms of lasso include reata, riata.

lasso (noun)	lariat (noun)
a long noosed rope used to catch animals	a long noosed rope used to catch animals

lasso (verb)	lariat (verb)
catch with a lasso