chartless vs unmapped

chartless and unmapped both are adjectives.

Word	Noun	Adjective	Verb	Adverb
chartless	No	Yes	No	No
unmapped	No	Yes	No	No

As adjectives, chartless and unmapped are synonyms defined as:

chartless and unmapped: (of unknown regions) not yet surveyed or investigated

Other synonyms of chartless include uncharted.

chartless (adjective)	unmapped (adjective)
(of unknown regions) not yet surveyed or investigated	(of unknown regions) not yet surveyed or investigated