口言葉
く
ち
こ
と
ば
Meanings
1
spoken language; spoken words
Refers to language as it is spoken, as opposed to written language. Often contrasted with 書き言葉 (written language).
See also: 口頭語
Spoken language and written language are different.
His spoken words are very polite.
2
A broader, somewhat rare use referring to language in general, often in contrast to non-verbal communication. More commonly expressed as 言語.
Language is not unique to humans.