Question

What is a contraction?

Answer 1

A combination of two words.

Explanation:

Some common contractions are:
isn't = is not
hasn't = has not
can't = can not
doesn't = does not
didn't = did not
I'm = I am
won't = will not
haven't = have not
he'll/she'll/it'll = he will, she will, it will

And some uncommon ones:
ma'am = madam
o'clock = of the clock
jack-o'-lantern = jack of the lantern