Latter and former are antonyms. If you say you like two things, x and y, then you can say 'the latter is better than the former" meaning y is better than x. Former means the first thing, latter means the second thing.

“Advice” is a noun. “Advise” is a verb.

"Fall" is no longer used in Britain, but is the predominant form in the U.S. Americans may find “autumn”more poetic and evocative.

Spring, summer, autumn and winter don’t get capitalized unless they start a sentence.

TLDR: Biweekly can mean either twice a week or once every two weeks. Similarly, bimonthly can mean either twice a month or once every two months.