Advice is a noun. Advise is a verb. John advised Spot not to run, but Spot didn’t take the advice.

is an ad, not an add.

Ban is a verb. Band is a noun. Bands is also an outdated mechanic in MTG. Ban bands!

Affluence – riches, wealthEffluence – something that flows out Best to not confuse the two.

Adverse – difficult circumstances Averse – strong feelings against X

Afterwards relates to time. Afterwords are book notations.

Albeit is one word.

Crevices are tiny, crevasses are large.

Heroin is made from opium. A heroine saves you from a falling building.

Capitol is a building. Capital is an uppercase letter.