kenning vs figure of speech

kenning and figure of speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
kenning	Yes	No	No	No
figure of speech	Yes	No	No	No

As nouns, figure of speech is a hypernym of kenning; that is, figure of speech is a word with a broader meaning than kenning:

kenning: conventional metaphoric name for something, used especially in Old English and Old Norse poetry
figure of speech: language used in a figurative or nonliteral sense

Other hypernyms of kenning include figure, image, trope.

kenning (noun)	figure of speech (noun)
conventional metaphoric name for something, used especially in Old English and Old Norse poetry	language used in a figurative or nonliteral sense