Difference in usage between "ostensive" and "ostensible" [closed]

Dictionary.com provides a sufficient starting point:

Ostensible:

1. outwardly appearing as such; professed; pretended: an ostensible cheerfulness concealing sadness.
2. apparent, evident, or conspicuous: the ostensible truth of their theories.

Ostensive:

1. clearly or manifestly demonstrative.
2. ostensible.

As far as I can tell, the only nuance between ostensible and ostensive is that ostensible means evident or apparent, sometimes pretended (externally), ostensive has a slight lean toward certain (internally). However, ostensive is not a widely used term, and is unlikely to be understood as different from ostensible in most contexts. So ostensible takes the cake in point of usefulness.