idea, ideal

Idea or idea means a notion or concept , something formed in the mind--
That's a good idea! Let's go out for a pizza.
Leaving your sandwich where the dog could get it was a bad idea.
When Edison invented the light bulb, he had to try 200 experiments to get his idea to work.

Ideal or ideal means the most perfect imaginable form of something--
He has spent years looking for his ideal mate.
This vacation spot is ideal--so quiet, but near the beach.

Now that you know that, you can say--
"I have an idea for an ideal night out. Let's take the kids to the outdoor movie."

Note--"I deal" ( two words ) is the first person singular ( I ) from of "deal", meaning to hand out, as cards, or to do business in, as products for sale--
You cut the cards; I deal.
I deal in antiques and collectibles.