Word pairs people mix up

Each with the difference in one line, examples and a way to remember.

• Affect or effect?Affect is usually the action; effect is usually the result.
• Lie or lay?You lie down yourself; you lay something down.
• Fewer or less?Fewer is for things you can count; less is for amounts you can’t.
• Complement or compliment?A complement completes something; a compliment is kind praise.
• Discreet or discrete?Discreet means tactful and quiet; discrete means separate.
• Principal or principle?Principal means main, or the head of a school; a principle is a rule or belief.
• Stationary or stationery?Stationary means not moving; stationery is paper and envelopes.
• Accept or except?Accept means to take or agree to; except means apart from.
• Advice or advise?Advice is the noun; advise is the verb.
• Allude or elude?To allude is to hint at something; to elude is to escape it.

These ten are free in Tuckleaf, a word notebook for iPhone. The app has 215.