Won't is a contracted form of will not, meaning the same thing. Will not is more formal, while won't is slightly more informal
Compounds combine two or more lexemes into single new words. Compounds can be written as one word or joined with hyphen. Compounds can be compositional (meaning determined by parts) or non-compositional. Compound nouns differ from nouns modified by adjectives or verbs
Compounding combines two or more words to form new words. Creates words with meanings different from individual ingredients. Commonly combines different parts of speech: nouns, verbs, adjectives, adverbs
Prefixes are added before words to indicate meaning (e.g. mono-, multi-). Suffixes are added after words to show their class (e.g. -ism, -er). Conversion changes words from one class to another (e.g. email to text). Compounding combines two or more bases to create new words (e.g. backache)
British spelling is 'shyer' and 'shyest', American English uses 'shier' and 'shiest'. 'More shy' is more common but 'shyer' is correct. 'Most shy' is also acceptable, though 'shyest' is often used
Both spellings are correct but differ by region. British English uses "colourful" with a "u". American English uses "colorful" without a "u". Both spellings mean the same thing: vibrant colors