The difference between Mostly and Principally

When used as adverbs, mostly means mainly or chiefly, whereas principally means in a primary manner.


check bellow for the other definitions of Mostly and Principally

  1. Mostly as an adverb:

    Mainly or chiefly; for the most part; usually, generally, on the whole.

    Examples:

    "They're mostly good people, although they have made a few mistakes."

  2. Mostly as an adverb (obsolete):

    To the greatest extent; most.

  1. Principally as an adverb:

    In a primary manner; pertaining to the principal of a matter.