The difference between Rouse and Roust

When used as nouns, rouse means an arousal, whereas roust means a strong tide or current, especially in a narrow channel.

When used as verbs, rouse means to wake (someone) or be awoken from sleep, or from apathy, whereas roust means to rout out of bed.

check bellow for the other definitions of Rouse and Roust

Rouse as a noun:

An arousal.
Rouse as a noun (military, British, and, Canada):

The sounding of a bugle in the morning after reveille, to signal that soldiers are to rise from bed, often the rouse.

Rouse as a verb:

To wake (someone) or be awoken from sleep, or from apathy.
Rouse as a verb:

To cause, stir up, excite (a feeling, thought, etc.).

Examples:

"to rouse the faculties, passions, or emotions"
Rouse as a verb:

To provoke (someone) to action or anger.
Rouse as a verb:

To cause to start from a covert or lurking place.

Examples:

"to rouse a deer or other animal of the chase"
Rouse as a verb (nautical):

To pull by main strength; to haul.
Rouse as a verb (obsolete):

To raise; to make erect.
Rouse as a verb (slang, when followed by "on"):

To tell off; to criticise.

Examples:

"He roused on her for being late yet again."

Rouse as a noun:

An official ceremony over drinks.
Rouse as a noun:

A carousal; a festival; a drinking frolic.
Rouse as a noun:

Wine or other liquor considered an inducement to mirth or drunkenness; a full glass; a bumper.

Roust as a noun:

A strong tide or current, especially in a narrow channel.

Examples:

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