squadron vs escadrille

squadron and escadrille both are nouns.

Word	Noun	Adjective	Verb	Adverb
squadron	Yes	No	No	No
escadrille	Yes	No	No	No

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

squadron: an air force unit larger than a flight and smaller than a group
escadrille: an air force squadron typically containing six airplanes (as in France during World War I)

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

squadron: a naval unit that is detached from the fleet for a particular task
escadrille: a small squadron

squadron (noun)	escadrille (noun)
an air force unit larger than a flight and smaller than a group	an air force squadron typically containing six airplanes (as in France during World War I)
a cavalry unit consisting of two or more troops and headquarters and supporting arms	a small squadron
a naval unit that is detached from the fleet for a particular task