The difference between Lapse and Stumble

When used as nouns, lapse means a temporary failure, whereas stumble means a fall, trip or substantial misstep.

When used as verbs, lapse means to fall away gradually, whereas stumble means to trip or fall.

check bellow for the other definitions of Lapse and Stumble

Lapse as a noun:

A temporary failure; a slip.
Lapse as a noun:

A decline or fall in standards.
Lapse as a noun:

A pause in continuity.
Lapse as a noun:

An interval of time between events.
Lapse as a noun:

A termination of a right etc., through disuse or neglect.
Lapse as a noun (meteorology):

A marked decrease in air temperature with increasing altitude because the ground is warmer than the surrounding air.
Lapse as a noun (legal):

A common-law rule that if the person to whom property is willed were to die before the testator, then the gift would be ineffective.
Lapse as a noun (theology):

A fall or apostasy.

Lapse as a verb (intransitive):

To fall away gradually; to subside.
Lapse as a verb (intransitive):

To fall into error or heresy.
Lapse as a verb:

To slip into a bad habit that one is trying to avoid.
Lapse as a verb (intransitive):

To become void.
Lapse as a verb:

To fall or pass from one proprietor to another, or from the original destination, by the omission, negligence, or failure of somebody, such as a patron or legatee.

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.