The difference between Mostly and Predominantly
When used as adverbs, mostly means mainly or chiefly, whereas predominantly means in a predominant manner. most commonly or frequently by a large margin.
check bellow for the other definitions of Mostly and Predominantly
-
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."
-
Mostly as an adverb (obsolete):
To the greatest extent; most.
-
Predominantly as an adverb:
In a predominant manner. Most commonly or frequently by a large margin.
Examples:
"The membership is predominantly elderly, 90% are over age 60."