climber vs root climber

climber and root climber both are nouns.

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

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

climber: a vine or climbing plant that readily grows up a support or over other plants
root climber: a plant that climbs by its adventitious roots e.g. ivy

Other hyponyms of climber include legume, leguminous plant, Agdestis, genus Agdestis, climbing fern.

climber (noun)	root climber (noun)
an iron spike attached to the shoe to prevent slipping on ice when walking or climbing	a plant that climbs by its adventitious roots e.g. ivy
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