colloquial form; vernacular word form
Linguistic term contrasting with 文語形 (classical/literary form). Used in grammar discussions to refer to the spoken or modern written form of a word.
See also: 文語形
The colloquial form of this verb is 食べる, while the classical form is 食ぶ.
Please explain the difference between colloquial and classical forms.
Compound of 口語 (こうご, 'spoken language') and 形 (けい, 'form').