Learn how to say Comparativity correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word comparative:
that compares; involving comparison as a method, esp. in a branch of study ⇒ comparative linguistics
estimated by comparison with something else; relative ⇒ a comparative success
(grammar) designating or of the second degree of comparison of adjectives and adverbs; expressing a greater degree of a quality or attribute than that expressed in the positive degree usually indicated by the suffix -er