​A word that is spelt or pronounced like another word but have completely different meaning is known as a/an​

Correct option is A

A word that is spelt or pronounced like another word but have completely different meaning is known as a Homonym.

Homonyms are words that sound alike (homophones) or are spelled alike (homographs) but have different meanings. For example:

Bat (an animal) vs. Bat (used in cricket) – same spelling and pronunciation, different meanings.

Right (correct) vs. Write (to form letters) – same pronunciation, different spellings and meanings (a type of homophone).

Synonym: A synonym is a word that has the same or nearly the same meaning as another word in the same language.

For example - Happy - Joyful, Cheerful, Glad

Antonym: An antonym is a word that has the opposite meaning of another word.

For example - Hot - Cold

Paronym: A paronym is a word that is derived from the same root as another word and has a similar form, but a different meaning.

In simpler terms, paronyms are words that look or sound similar (often from the same origin) but are used in different contexts and have different meanings.

For example - Eminent  = famous/respected

Imminent = about to happen