Forestry vs Forestay – What’s the difference?

As nouns the difference between forestry and forestay is that forestry is the science of planting and growing trees in forests while forestay is (nautical) a stay that extends from the top of the foremast to the bow or bowsprit of a sailing ship. As a verb forestay is to stay beforehand; secure or fasten with or as with a forestay or forestay can be to stay, delay, postpone, or hinder beforehand; forestall; prevent.