climber vs escalader

climber and escalader both are nouns.

Word	Noun	Adjective	Verb	Adverb
climber	Yes	No	No	No
escalader	Yes	No	No	No

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

climber: someone who climbs as a sport; especially someone who climbs mountains
escalader: someone who gains access by the use of ladders

Other hyponyms of climber include mountain climber, mountaineer, cragsman, rock climber.

climber (noun)	escalader (noun)
an iron spike attached to the shoe to prevent slipping on ice when walking or climbing	someone who gains access by the use of ladders
someone who climbs as a sport; especially someone who climbs mountains
someone seeking social prominence by obsequious behavior
someone who ascends on foot
a vine or climbing plant that readily grows up a support or over other plants