The difference between Bloom and Blossom

When used as nouns, bloom means a blossom, whereas blossom means a flower, especially one indicating that a fruit tree is fruiting.

When used as verbs, bloom means to cause to blossom, whereas blossom means to have, or open into, blossoms.

check bellow for the other definitions of Bloom and Blossom

Bloom as a noun:

A blossom; the flower of a plant; an expanded bud.
Bloom as a noun:

Flowers, collectively.
Bloom as a noun (uncountable):

The opening of flowers in general; the state of blossoming or of having the flowers open.

Examples:

"The cherry trees are in bloom."
Bloom as a noun (figuratively):

A state or time of beauty, freshness, and vigor/vigour; an opening to higher perfection, analogous to that of buds into blossoms.

Examples:

"the bloom of youth"
Bloom as a noun:

Rosy colour; the flush or glow on a person's cheek.
Bloom as a noun:

The delicate, powdery coating upon certain growing or newly-gathered fruits or leaves, as on grapes, plums, etc.
Bloom as a noun:

Anything giving an appearance of attractive freshness.
Bloom as a noun:

The clouded appearance which varnish sometimes takes upon the surface of a picture.
Bloom as a noun:

A yellowish deposit or powdery coating which appears on well-tanned leather.

Examples:

"rfquotek Knight"
Bloom as a noun (mineralogy):

A bright-hued variety of some minerals.

Examples:

"the rose-red cobalt bloom'"
Bloom as a noun (culinary):

A white area of cocoa butter that forms on the surface of chocolate when warmed and cooled.
Bloom as a noun (television):

An undesirable halo effect that may occur when a very bright region is displayed next to a very dark region of the screen.

Bloom as a verb (transitive):

To cause to blossom; to make flourish.
Bloom as a verb (transitive):

To bestow a bloom upon; to make blooming or radiant.

Examples:

"rfquotek Milton"
Bloom as a verb (intransitive):

Of a plant, to produce blooms; to open its blooms.
Bloom as a verb (intransitive, figuratively):

Of a person, business, etc, to flourish; to be in a state of healthful, growing youth and vigour; to show beauty and freshness.

Bloom as a noun:

The spongy mass of metal formed in a furnace by the smelting process.

Blossom as a noun (collectively):

A flower, especially one indicating that a fruit tree is fruiting; a mass of such flowers.

Examples:

"The blossom has come early this year."
Blossom as a noun:

The state or season of producing such flowers.

Examples:

"The orchard is in blossom."
Blossom as a noun (figurative):

A blooming period or stage of development; something lovely that gives rich promise.
Blossom as a noun:

The colour of a horse that has white hairs intermixed with sorrel and bay hairs.

Blossom as a verb (intransitive):

To have, or open into, blossoms; to bloom.
Blossom as a verb (intransitive):

To begin to thrive or flourish.