Anecdote is a noun which means a short, amusing and an interesting story, which sometimes is taken as a rumour.

Sentences:

- There are numerous anecdotes about the personal lives of celebrities.

- Our grandparents always have one or the other anecdote to tell us.

Antidote is a noun meaning a remedy to counter a particular poison.

Sentences:

- After a snake bit him, He was immediately administered an antidote.

- Spa and beauty treatments act as a perfect antidote to stress.