“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.

TLDR: "Apart" when objects are kept at a distance. "A part" when one is a constituent of a bigger entity.