turbulence vs riptide

turbulence and riptide both are nouns.

Word	Noun	Adjective	Verb	Adverb
turbulence	Yes	No	No	No
riptide	Yes	No	No	No

As nouns, riptide is a hyponym of turbulence; that is, riptide is a word with a more specific, narrower meaning than turbulence:

turbulence: unstable flow of a liquid or gas
riptide: a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current

Other hyponyms of turbulence include countercurrent, crosscurrent, rip, tide rip.

turbulence (noun)	riptide (noun)
unstable flow of a liquid or gas	a strong surface current flowing outwards from a shore
a state of violent disturbance and disorder (as in politics or social conditions generally)	a stretch of turbulent water in a river or the sea caused by one current flowing into or across another current
instability in the atmosphere