header vs hitting

header and hitting both are nouns.

Word	Noun	Adjective	Verb	Adverb
header	Yes	No	No	No
hitting	Yes	No	No	No

As nouns, hitting is a hypernym of header; that is, hitting is a word with a broader meaning than header:

Other hypernyms of header include hit, striking.

header (noun)	hitting (noun)
(soccer) the act of hitting the ball with your head	the act of contacting one thing with another
a headlong jump (or fall)
a machine that cuts the heads off grain and moves them into a wagon
a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafters
brick that is laid sideways at the top of a wall
horizontal beam used as a finishing piece over a door or window
a line of text serving to indicate what the passage below it is about