call me old fashioned but......
I think they invented one of those decades ago......
it's called a "DICTIONARY"
It's an actual book! AND EVERY WORD (depending on which edition you get) is in it with the correct spelling, how to pronounce the word and definition
dicĀ·tionĀ·arĀ·y
a book that lists the words of a language (typically in alphabetical order) and gives their meaning, or gives the equivalent words in a different language, often also providing information about pronunciation, origin, and usage.