The difference between Blockhead and Chump

When used as nouns, blockhead means a stupid person, whereas chump means an incompetent person, a blockhead.

Blockhead is also verb with the meaning: to perform as a human blockhead.

check bellow for the other definitions of Blockhead and Chump

Blockhead as a noun (colloquial):

A stupid person.
Blockhead as a noun:

A sideshow performer who hammers nails or similar items through his or her nostril into the nasal cavity; human blockhead.

Chump as a noun (colloquial, pejorative):

An incompetent person, a blockhead; a loser.

Examples:

"That chump wouldn't know his ass from a hole in the ground."
Chump as a noun:

A gullible person; a sucker; someone easily taken advantage of; someone lacking common sense.

Examples:

"It shouldn't be hard to put one over on ''that'' chump."
Chump as a noun:

The thick end, especially of a piece of wood or of a joint of meat.