speak vs run on

speak and run on both are verbs.

Word	Noun	Adjective	Verb	Adverb
speak	No	No	Yes	No
run on	No	No	Yes	No

As verbs, run on is a hyponym of speak; that is, run on is a word with a more specific, narrower meaning than speak:

Other hyponyms of speak include smatter, slang.

speak (verb)	run on (verb)
express in speech	talk or narrate at length
exchange thoughts; talk with	continue uninterrupted
use language
give a speech to
make a characteristic or natural sound