cam stroke vs outstroke

cam stroke and outstroke both are nouns.

Word	Noun	Adjective	Verb	Adverb
cam stroke	Yes	No	No	No
outstroke	Yes	No	No	No

As nouns, outstroke is a hyponym of cam stroke; that is, outstroke is a word with a more specific, narrower meaning than cam stroke:

cam stroke: the maximum movement available to a pivoted or reciprocating piece by a cam
outstroke: the stroke of an engine piston moving toward the crankshaft

Other hyponyms of cam stroke include instroke.

cam stroke (noun)	outstroke (noun)
the maximum movement available to a pivoted or reciprocating piece by a cam	the stroke of an engine piston moving toward the crankshaft