clear sailing vs easy going

clear sailing and easy going both are nouns.

Word	Noun	Adjective	Verb	Adverb
clear sailing	Yes	No	No	No
easy going	Yes	No	No	No

As nouns, clear sailing and easy going are synonyms defined as:

Other synonyms of clear sailing include plain sailing.

clear sailing (noun)	easy going (noun)
easy unobstructed progress	easy unobstructed progress