Notate vs Novate - What's the difference?

As verbs the difference between notate and novate

is that notate is to mark with spots or lines, which are often colored while novate is to replace something with something new.

(notat)

To mark with spots or lines, which are often colored.

To add notes to; to annotate

To create notation (i.e. music); to record/put down in the form of notation

(novat)

To replace something with something new

(legal) To replace a debt or other obligation

* OED 2nd edition 1989 ----