mechanical advantage vs ratio

mechanical advantage and ratio both are nouns.

Word	Noun	Adjective	Verb	Adverb
mechanical advantage	Yes	No	No	No
ratio	Yes	No	No	No

As nouns, ratio is a hypernym of mechanical advantage; that is, ratio is a word with a broader meaning than mechanical advantage:

mechanical advantage: the ratio of the force exerted by a machine to the force applied to it
ratio: the relative magnitudes of two quantities (usually expressed as a quotient)

mechanical advantage (noun)	ratio (noun)
the ratio of the force exerted by a machine to the force applied to it	the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree
	the relative magnitudes of two quantities (usually expressed as a quotient)