The difference between Merry and Unhappy

When used as nouns, merry means an english wild cherry, whereas unhappy means an individual who is not happy.

When used as adjectives, merry means jolly and full of high spirits, whereas unhappy means not happy.

check bellow for the other definitions of Merry and Unhappy

Merry as an adjective:

Jolly and full of high spirits.

Examples:

"We had a very merry Christmas."
Merry as an adjective:

Festive and full of fun and laughter.

Examples:

"Everyone was merry at the party."
Merry as an adjective:

Brisk

Examples:

"The play moved along at a merry pace."
Merry as an adjective:

Causing laughter, mirth, gladness, or delight.

Examples:

"a merry jest"
Merry as an adjective (euphemistic):

drunk; tipsy

Examples:

"Some of us got a little merry at the office Christmas party."

Unhappy as an adjective:

Not happy; sad.
Unhappy as an adjective:

Not satisfied; unsatisfied.

Examples:

"An unhappy customer is unlikely to return to your shop."
Unhappy as an adjective (mostly, dated):

Not lucky; unlucky.

Examples:

"The doomed lovers must have been born under an unhappy star."
Unhappy as an adjective (mostly, dated):

Not suitable; unsuitable.