Grocery stores have them.
Aisle or isle
Aisle
A fight.
Dual or duel
Found in ponds and marshes.
Leeches or leaches
Refers to the area where your belly button is.
Navel or naval
Navel
To forbid public distribution.
Sensor or censor
Censor
The money you pay to get someone out of jail.
Bale or bail
A female protagonist.
Heroin or heroine
Heroine
Tibetan monk.
Lama or llama.
Lama
The head teacher at a school.
Principle or principal
Principal
An adjective that means "very".
Udder or utter
Utter
What Noah built.
Arc or arc
Ark
Meaning unless or exclude.
Except or accept.
Except
A deep ditch dug around a castle.
Mote or moat.
Moat
To interest or excite.
Peak, pique or peek
Pique
The first showing of a film.
Premier or premiere
Premiere
Something kooky or odd.
Bizarre or bazaar
Bizzarre
The opposite of continuous.
Discreet or discrete.
Discrete
Medal, mettle, meddle
Mettle
The time period for which king or queen holds the throne.
Reign, rein or rain.
Reign
Self-admiring.
Vane, vein or vain
Vain
The proportion of gold in an alloy.
Carat, karat or carrot
A group of craftsmen.
Gild or guild
Guild
A peaceful place or time.
Idol, idyll or idle
Idyll
One's sense of taste.
Pallet, palate or palette
Palate
The yellow part in an egg.
Yoke or yolk
Yolk