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.
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.
書き言葉 means written language, the direct opposite of 口言葉 in the spoken/written contrast.
話し言葉 is a more common synonym for spoken language, often used in linguistics contexts.
言語 is the general term for language, while 口言葉 specifically emphasizes the spoken aspect.
Standard kanji spelling for spoken language or spoken words.
Rare variant spelling; 詞 is sometimes used for words or lyrics, but this form is uncommon.
Compound of 口 (mouth, speech) and 言葉 (word, language). The exact historical derivation is uncertain, but the word has been used to distinguish spoken from written language.