Conversion. Classification
When the spelling and pronunciation are the same, but the function, part of speech, the meaning have changed we have a conversion. It’s a type of word-formation which consists of making a new word by changing the category of the part of speech. Conversation is one of the most productive types of English word-formation, because of the analytical type of the language. Заголовок слайда Classification It is when the noun is a name of a tool and the verb which is formed denotes an actions, which is performed by this tool: Ex. a brush- to brush a pencil – to pencil a nail – to nail