As nouns the difference between flower and pop

is that flower is a colorful, conspicuous structure associated with angiosperms, frequently scented and attracting various insects, and which may or may not be used for sexual reproduction or flower can be something that flows, such as a river while pop is a social club and debating society at or pop can be (also in plural) a popular classical music concert.

As a verb flower

is to put forth blooms.