cusp

As a noun cusp

is a sharp point or pointed end.

As an adjective cuspless is

without a cusp or cusps.

As nouns the difference between cusp and bicorn

is that cusp is a sharp point or pointed end while bicorn is (mathematics) a plane curve having two cusps.

As an adjective bicorn is

having two horns.

As nouns the difference between cusp and bunodont

is that cusp is a sharp point or pointed end while bunodont is a creature with teeth of this kind.

As an adjective bunodont is

(of molars) whose cusps are rounded, not sharp peaks.

As a noun cusp

is a sharp point or pointed end.

As an adjective cuspidate is

having a cusp.