hail / hale are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
hail: (noun) precipitation of ice pellets when there are strong rising air currents. (noun) many objects thrown forcefully through the air. (noun) enthusiastic greeting. (verb) be a native of. (verb) call for. (verb) greet enthusiastically or joyfully. (verb) precipitate as small ice particles.
hale: (noun) a soldier of the American Revolution who was hanged as a spy by the British; his last words were supposed to have been `I only regret that I have but one life to give for my country' (1755-1776). (noun) United States astronomer who discovered that sunspots are associated with strong magnetic fields (1868-1938). (noun) prolific United States writer (1822-1909). (adjective) exhibiting or restored to vigorous good health.
hail: hh·EY·l
hale: hh·EY·l
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)