Header and Key word

Header noun - A word or series of words often in larger letters placed at the beginning of a passage or at the top of a page in order to introduce or categorize.

Key word and header are semantically related. In some cases you can replace phrase "Key word" with "Header", this terms are similar.

Nearby Word: heading

Key word noun - A significant word used in indexing or cataloging.

Header and key word are semantically related. Sometimes you can use "Header" instead a noun phrase "Key word".