The words suite, sweet sound the same but have different meanings and spellings. Why do suite, sweet sound the same even though they are completely different words?
The answer is simple: suite, sweet are homophones of the English language.
A staff of attendants or followers; a retinue.
A group of related things intended to be used together; a set.
A set of matching furniture: a dining room suite.
A series of connected rooms used as a living unit.
Having the taste of sugar or a substance containing or resembling sugar, as honey or saccharin.
Containing or derived from sugar.
Retaining some natural sugar; not dry: a sweet wine.
Pleasing to the senses; agreeable: the sweet song of the lark; a sweet face.
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.