There’s different terms for words that are similar here are a few.
Homonym
A homonym is a word that sounds like, or is spelled differently but have different meanings. Coming from Ancient Greek Homo meaning Same and Onym meaning Name.
Examples
- There/Their/They’re
- Bow(Weapon)/Bow(To Bow at someone)/Bow(Accessory)
Heteronym
A heteronym is a word that has a different pronunciation and meaning from another word but the same spelling. Coming from Ancient Greek Hetero meaning Different and Onym meaning Name.
Examples
- Don’t desert(to leave) me here in the desert(A Place)!
- Upon seeing the tear(To rip) in the painting I shed a tear(To Cry).
Homograph
A homograph is a word that looks the same but has a different meaning. Coming from Ancient Greek Homo meaning Same and Graph meaning Write.
Examples
- Sow(To plant a seed) and Sow(A female pig)
- Lead(The Material) and Lead(To have something follow it)
Homophone
A homophone is a word that is pronounced the same/similarly but has a different meaning. Coming from Ancient Greek Homo meaning Same and Phone meaning Voice. If there is more than one word it can be called an Oronym.
Examples
- Merry(To be happy) and Mary(The Name)
- Ice Cream(The Food) and I Scream(The Verb)
Synonym
A synonym is a word that means the same thing as another word in the same language. Coming from Syn meaning With and Onym meaning Name.
Examples
- Drink and Beverage
- Buy and Purchase
Jacks Linguistics 
