weather map vs weather chart

weather map and weather chart both are nouns.

Word	Noun	Adjective	Verb	Adverb
weather map	Yes	No	No	No
weather chart	Yes	No	No	No

As nouns, weather map and weather chart are synonyms defined as:

weather map and weather chart: (meteorology) a map showing the principal meteorological elements at a given time and over an extended region

weather map (noun)	weather chart (noun)
(meteorology) a map showing the principal meteorological elements at a given time and over an extended region	(meteorology) a map showing the principal meteorological elements at a given time and over an extended region