The difference between Pointful and Pointless

When used as adjectives, pointful means having real substance, whereas pointless means having no point or sharp tip.

check bellow for the other definitions of Pointful and Pointless

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"