The difference between Fluff and Lapse

When used as nouns, fluff means anything light, soft or fuzzy, especially fur, hair, feathers, whereas lapse means a temporary failure.

When used as verbs, fluff means to make something fluffy, whereas lapse means to fall away gradually.

check bellow for the other definitions of Fluff and Lapse

Fluff as a noun:

Anything light, soft or fuzzy, especially fur, hair, feathers.
Fluff as a noun:

Anything inconsequential or superficial.

Examples:

"That article was basically a bunch of fluff. It didn't say anything substantive."
Fluff as a noun:

Lapse, especially a mistake in an actor's lines.
Fluff as a noun (New England):

Marshmallow creme.
Fluff as a noun (LGBT):

A passive partner in a lesbian relationship.
Fluff as a noun (Australia, euphemistic):

A fart.

Fluff as a verb (transitive):

To make something fluffy.

Examples:

"The cat fluffed its tail."
Fluff as a verb (intransitive):

To become fluffy, puff up.
Fluff as a verb (intransitive):

To move lightly like fluff.

Examples:

"rfquotek Holmes"
Fluff as a verb (transitive, intransitive, of an actor or announcer):

To make a mistake in one's lines.
Fluff as a verb (transitive):

To do incorrectly, for example mishit, miskick, miscue etc.
Fluff as a verb (intransitive, Australia, euphemistic):

To fart.
Fluff as a verb (transitive, slang):

To arouse (a male pornographic actor) before filming.

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.