The difference between Blooper and Stumble

When used as nouns, blooper means a blunder, an error, whereas stumble means a fall, trip or substantial misstep.

Stumble is also verb with the meaning: to trip or fall.

check bellow for the other definitions of Blooper and Stumble

Blooper as a noun (informal):

A blunder, an error.

Examples:

"synonyms boo-boo faux pas fluff gaffe lapse mistake slip stumble Thesaurus:error"
Blooper as a noun (baseball, slang):

A fly ball that is weakly hit just over the infielders.

Examples:

"synonyms banjo hit flare Texas leaguer"
Blooper as a noun (film, informal):

A filmed or videotaped outtake that has recorded an amusing accident and/or mistake.
Blooper as a noun (nautical):

A gaff-rigged fore-and-aft sail set from and aft of the aftmost mast of a square-rigged ship; a spanker.
Blooper as a noun (US, dated):

A radio which interferes with other radios, causing them to bloop (squeal loudly).

Stumble as a verb (intransitive):

To trip or fall; to walk clumsily.

Examples:

"He stumbled over a rock."
Stumble as a verb (intransitive):

To make a mistake or have trouble.

Examples:

"I always stumble over verbs in Spanish."
Stumble as a verb (transitive):

To cause to stumble or trip.
Stumble as a verb (transitive, figurative):

To mislead; to confound; to cause to err or to fall.
Stumble as a verb:

To strike or happen (upon a person or thing) without design; to fall or light by chance; with on, upon, or against.