Flower is a related term of burgeon.

In obsolete|lang=en terms the difference between flower and burgeon

is that flower is (obsolete) flour while burgeon is (obsolete) bud, sprout, shoot.

As nouns the difference between flower and burgeon

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 burgeon is (obsolete) bud, sprout, shoot.

As verbs the difference between flower and burgeon

is that flower is to put forth blooms while burgeon is to grow or expand.