airstream vs slipstream

airstream and slipstream both are nouns.

Word	Noun	Adjective	Verb	Adverb
airstream	Yes	No	No	No
slipstream	Yes	No	No	No

As nouns, airstream and slipstream are synonyms defined as:

airstream and slipstream: the flow of air that is driven backwards by an aircraft propeller

Other synonyms of airstream include backwash, race, wash.

airstream (noun)	slipstream (noun)
a relatively well-defined prevailing wind	the flow of air that is driven backwards by an aircraft propeller
the flow of air that is driven backwards by an aircraft propeller