mast vs masthead

mast and masthead both are nouns.

Word	Noun	Adjective	Verb	Adverb
mast	Yes	No	No	No
masthead	Yes	No	No	No

mast (noun)	masthead (noun)
a vertical spar for supporting sails	the head or top of a mast
any sturdy upright pole	the title of a newspaper or magazine; usually printed on the front page and on the editorial page
nuts of forest trees used as feed for swine	a listing printed in all issues of a newspaper or magazine (usually on the editorial page) that gives the name of the publication and the names of the editorial staff, etc.
nuts of forest trees (as beechnuts and acorns) accumulated on the ground