Definitions:
relating to mode or form as opposed to substance

relating to a value that occurs most frequently in a given set of data

of or denoting the mood of a verb.

of or denoting music using melodies or harmonies based on modes other than the ordinary major and minor scales

(of a proposition) in which the predicate is affirmed of the subject with some qualification, or which involves the affirmation of possibility, impossibility, necessity, or contingency

a modal word or construction.

a type of rayon fibre or fabric that has high strength when wet, made mainly from beechwood pulp