How does Spell Check work and what are some of its limitations?

Spell check works by comparing Words in a document against a dictionary of correctly spelled Words, identifying any discrepancies. It typically uses algorithms to suggest corrections based on common patterns and context. However, its limitations include the inability to catch homophones (Words that sound the same but are spelled differently), context-specific errors, and Words that are not included in its dictionary, such as proper nouns or technical jargon. Additionally, spell check may not account for grammatical mistakes, leading to incomplete error detection.