naval chart vs pilot chart

naval chart and pilot chart both are nouns.

Word	Noun	Adjective	Verb	Adverb
naval chart	Yes	No	No	No
pilot chart	Yes	No	No	No

As nouns, naval chart and pilot chart are synonyms defined as:

naval chart and pilot chart: a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions

Other synonyms of naval chart include navigational chart.

naval chart (noun)	pilot chart (noun)
a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions	a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions