press of sail vs press of canvas

press of sail and press of canvas both are nouns.

Word	Noun	Adjective	Verb	Adverb
press of sail	Yes	No	No	No
press of canvas	Yes	No	No	No

As nouns, press of sail and press of canvas are synonyms defined as:

press of sail and press of canvas: the greatest amount of sail that a ship can carry safely

press of sail (noun)	press of canvas (noun)
the greatest amount of sail that a ship can carry safely	the greatest amount of sail that a ship can carry safely