Synonymy is when two words have the same or almost the same meaning.
Synonymy is a useful thing for writers and speakers to know about.
Examples:
The synonymy of 'happy' is 'glad'.
In synonymy, 'big' means the same as 'large'.
The teacher explained the synonymy of 'good' and 'great'.
The synonymy of 'tired' and 'sleepy' is important to know.
In the land of synonymy, all words are friends.
Knowing the synonymy of words can make you a better writer.