words vs speech

words and speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
words	Yes	No	No	No
speech	Yes	No	No	No

As nouns, words and speech are synonyms defined as:

Other synonyms of words include actor's line.

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

words (noun)	speech (noun)
words making up the dialogue of a play	the mental faculty or power of vocal communication
an angry dispute	(language) communication by word of mouth
the text of a popular song or musical-comedy number	the act of delivering a formal spoken communication to an audience
the words that are spoken	words making up the dialogue of a play
language that is spoken or written	a lengthy rebuke
	the exchange of spoken words
	your characteristic style or manner of expressing yourself orally
	something spoken