What is the part of speech for the word map title?

Answer 1

The word 'title' is a noun, modified by the noun 'map'.

A noun used to describe another noun is called an attributive noun.

Example: The map title is important because it tells you what you are looking at.

The word 'map' is also a verb: map, maps, mapping, mapped.

The word 'title' is also a verb: title, titles, titling, titled.