The difference between Pointed and Pointless

When used as adjectives, pointed means sharp, barbed, whereas pointless means having no point or sharp tip.

check bellow for the other definitions of Pointed and Pointless

Pointed as an adjective (comparable):

Sharp, barbed; not dull.

Examples:

"The warrior brandished a pointed spear."
Pointed as an adjective (not comparable):

In animals, having a coat pattern with points, that is, darkening of the extremities.

Examples:

"The Siamese is a pointed breed of cat."
Pointed as an adjective (comparable, of a comment or inference):

Directed negatively at a person or topic.

Pointless as an adjective:

Having no point or sharp tip; terminating squarely or in a rounded end.

Examples:

"a pointless sword"

"a pointless knife"
Pointless as an adjective:

Having no prominent or important feature, as of an argument, discourse, etc.

Examples:

"a pointless remark"

"The [[sequel]] to the film was even more pointless than the original"
Pointless as an adjective:

Having no purpose; purposeless; unable to effect an aim.

Examples:

" Since the decision has already been made, further discussion seems pointless."
Pointless as an adjective (mathematics):

Without points.

Examples:

"a pointless topology"