C, content words, F, function words, grammar, English Grammar

Q1. What are the content words? 

Content words are words that have meaning for example, Can you drive? Here, drive (to drive) is a content word, while can and you are Function words.

Therefore, we refer to content words as an "open" class. Nouns, verbs, adjectives, and adverbs are content parts of speech. 

Q2. What are the function words?

Function words are words that exist to explain or create grammatical or structural relationships into which the content words may fit.