What's the difference between disputatious and eristic?

Disputatious

Definition:

(a.) Inclined to dispute; apt to civil or controvert; characterized by dispute; as, a disputatious person or temper.

Example Sentences:

(1) He plunged into every controversy for 50 years, to deflate, to promote, to punish and reward before the jury of his disputatious friends and competitors.
(2) We have a vibrant, exciting, passionate, disputatious, sometimes infuriating press.
(3) Quite what constitutes comedy as opposed to tragedy is a vexatious question, but if this novel is different in tone from anything I've written before, that is because the qualities that might roughly be said to have defined my voice in the past – disputatiousness and irony, a love of the sardonic, the ambivalent and the contradictory – are precisely what are missing from the world of J .
(4) More than 250 economists have signed a letter endorsing the idea that leaving would be a threat to the economy – a rare display of unity in a notoriously disputatious profession.
(5) Each of these phases and eras produces its own distorted knowledge of the other, each its own reductive images, its own disputatious polemics.
(6) Yet, strangely enough, as the SWP's "democratic opposition" has pointed out, the Bolshevik party that seized power in October 1917 was a disputatious creature, large, unwieldy, democratic and faction-ridden.
(7) There could be nothing more dissimilar than the disciplined if corruption-prone party machinery of the CDC and the open, disputatious assemblies and rotating leadership of the CUP.

Definition:

Example Sentences:

(1) Electrophysiological charact eristics of frog intrafusal muscle fibers were studied by means of the intracellular potential recording.