The words teas, tease, tees, tis sound the same but have different meanings and spellings. Why do teas, tease, tees, tis sound the same even though they are completely different words?
The answer is simple: teas, tease, tees, tis are homophones of the English language.
Plural form of tea.
To annoy or pester; vex.
To make fun of; mock playfully.
To arouse hope, desire, or curiosity in without affording satisfaction.
To urge persistently; coax: teasing their mother for more candy.
Plural form of tee.
A common contraction of it is.
Definitions from Wiktionary, Creative Commons Attribution/Share-Alike License, from The American Heritage® Dictionary of the English Language, 4th Edition, from the GNU version of the Collaborative International Dictionary of English and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.