Enthusiasm vs Overbubble - What's the difference?

As a noun enthusiasm

is (obsolete|or|historical) possession by a god; divine inspiration or frenzy.

to bubble over, especially with exuberance or enthusiasm.

(wikipedia enthusiasm)

(obsolete, or, historical) Possession by a god; divine inspiration or frenzy.

* 1946 , Bertrand Russell, History of Western Philosophy , ch. 1

The intoxication that they sought was that of ‘enthusiasm ’, of union with the god.

Intensity of feeling; excited interest or eagerness.

Something in which one is keenly interested.

* 1968 , Central States Archaeological Journal (volumes 15-16, page 154)

My main enthusiasm is attending and seeing the progress and interest of collectors, to meet old friends, and hopefully to make new friends.

* 2012 , Nicholas Joll, Philosophy and The Hitchhiker's Guide to the Galaxy (page 23)

Other Adamsian enthusiasms included: fast cars; restaurants; Bach, the Beatles, Pink Floyd and Dire Straits;

(overbubbl)

To bubble over, especially with exuberance or enthusiasm.

* 1960 , John R Rice, Apples of Gold

My peace is divine, and it never can cloy, / And that makes my heart overbubble with joy.

* 1969 , Max Beerbohm, More Theatres, 1898-1903

Humour is ever Mr Pinero's strongest point, and in none of his plays does it so gaily effervesce and overbubble as in Sweet Lavender ...