pilot chart vs naval chart

pilot chart and naval chart both are nouns.

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

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

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

Other synonyms of pilot chart include navigational chart.

pilot chart (noun)	naval 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