Homonyms - words that have same spelling ,same pronunciation but different meaning. Right -used as  direction and also a synonym of correct.

Homophones - words that have same pronunciation but have different meaning.For example -bean and been.

Hypographs - words with different pronunciation, meanings and origins but the same spelling. Example :

minute – used as synonym of tiny and also a unit of time

Hyponyms  - word used to designate a particular member of a broader class. For example - dog - a hyponym of animals.