The words chorale, corral sound the same but have different meanings and spellings. Why do chorale, corral sound the same even though they are completely different words?
The answer is simple: chorale, corral are homophones of the English language.
A Protestant hymn melody.
A harmonized hymn, especially one for organ.
A chorus or choir.
An enclosure for confining livestock.
An enclosure formed by a circle of wagons for defense against attack during an encampment.
To drive into and hold in a corral.
To arrange (wagons) in a corral.
Definitions from The American Heritage® Dictionary of the English Language, 4th Edition and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.