Paronyms and homonyms

Paronyms are words that are close in sound and structure (often with the same root) but differ in meaning: «одеть – надеть», «экономный – экономичный». Confusing them spoils the sense of a sentence: «одеть» means to dress someone, «надеть» means to put something on oneself. Homonyms are words with the same spelling and sound but unrelated meanings: «лук» (the vegetable) and «лук» (the weapon). Unlike the meanings of a polysemantic word, those of homonyms have nothing in common. There are also kinds of homonyms: homographs («замок» – «за́мок»), homophones («луг» – «лук»: at the end of the word [г] is devoiced and sounds like [к]) and homoforms («три», a numeral and the imperative of «тереть»). Check the meaning of paronyms and homonyms in a dictionary.