The best word for "words that mean the same thing" is synonym. A synonym for big is large, for example.
The word for a word that is similar to another in meaning is synonym.
Absent
Synonyms are the different words that mean the same thing. Like for the word mean, a synonym would be unkind. Antonyms are words that mean the opposite of a word. For the word mean, an antonym might be nice.
encluded
Split Shared by
both of the words are real and both mean the same thing, a fear of long words
every thing together
Its two words. They mean one thing though.
duel,fight,combat
Attempting, endeavoring.
Drowsy and somnolent are two . . .
The word name refers to a word or set of words by which an entity, person or thing is addressed, or referred to.