What's the difference between indehiscent and nucamentaceous?

Indehiscent

Definition:

• (a.) Remaining closed at maturity, or not opening along regular lines, as the acorn, or a cocoanut.

Example Sentences:

Nucamentaceous

Definition:

• (a.) Like a nut either in structure or in being indehiscent; bearing one-seeded nutlike fruits.

Example Sentences: