Headsail is a synonym of foresail.
In nautical terms the difference between foresail and headsail
is that foresail is a square fore-and-aft sail set on the foremast, but behind it, on a schooner or other similar vessel while headsail is any sail of a sailing vessel set forward of the foremost mast.
As nouns the difference between foresail and headsail
is that foresail is the lowest (and usually the largest) square sail hung on the foremast while headsail is any sail of a sailing vessel set forward of the foremost mast.
foresail
English
Noun
(
en noun)
(nautical, on a square-rigged ship) The lowest (and usually the largest) square sail hung on the foremast
(nautical) A square fore-and-aft sail set on the foremast, but behind it, on a schooner or other similar vessel.
(nautical, on a sloop) A triangular sail set forward of the foremast: forestaysail.
headsail
English
Noun
(
en noun)
(nautical) Any sail (of a sailing vessel) set forward of the foremost mast.
Synonyms
* foresail