stature vs tallness

stature and tallness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stature	Yes	No	No	No
tallness	Yes	No	No	No

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

Other hyponyms of stature include shortness, stockiness.

stature (noun)	tallness (noun)
(of a standing person) the distance from head to foot	the vertical dimension of extension; distance from the base of something to the top
high level of respect gained by impressive development or achievement	the property of being taller than average stature