side-slip vs slew

side-slip is not a noun while slew is a noun.

Word	Noun	Adjective	Verb	Adverb
side-slip	No	No	Yes	No
slew	Yes	No	Yes	No

As verbs, slew is a hypernym of side-slip; that is, slew is a word with a broader meaning than side-slip:

side-slip: slide sideways through the air in a downward direction in an airplane along an inclined lateral axis
slew: move obliquely or sideways, usually in an uncontrolled manner

Other hypernyms of side-slip include skid, slide, slip, slue.

side-slip (noun)	slew (noun)
	(often followed by `of') a large number or amount or extent

side-slip (verb)	slew (verb)
slide sideways through the air in a downward direction in an airplane along an inclined lateral axis	turn sharply; change direction abruptly
	move obliquely or sideways, usually in an uncontrolled manner