Whoa is the preferred spelling to woah. English speakers use “whoa” or “woah" as an exclamation to stop or slow horses or express alarm, joy, or surprise.
"Traveling" and "travelling" are both correct. The former is the preferred spelling in American English; the latter is the British spelling.
A “wether” is a castrated sheep, goat, or ram. “Whether” is a conjunction that functions like “if” by introducing alternate or opposite possibilities.
“Therefor” and “therefore” are homophones; the two words sound the same though they have different meanings.
‘Til and till are acceptable synonyms of “until,” although till is standard and ‘til is informal. Always avoid the spelling of ‘till (apostrophe and two l’s).
Some people confuse the word sentience with the word sapience, but there's a simple trick to remember the difference.
Spelled and spelt are both past tense/past participles of the verb “spell,” although North American English prefers “spelled.”
"Realize" and "realise" mean the same thing. When they’re spoken out loud, they sound the same. The spelling difference is the only thing separating the two.
“Setup” is a noun that British English spells as “set-up.” The verb phrase “set up” (two words) shares the same spelling for British and American English.
Polygamy describes any group marriage, consisting of three or more people. The word can also refer to sexual relationships or the mating habits of animals.
A diagnosis is the determination of a disease or ailment. A prognosis is the predicted outcome of a condition.