I understand a genre as a particular style of writing with specific purpose and audience.

Examples:

Science Fiction, Children’s books (Picture books), Journaling, Email, Texting, Comics, Novel, Letter, Commercial Slogan, Research paper.

My favorites are the first two:

Science Fiction compelling to me because it present imaginary reality which rooted in scientific fact and it makes it convincing and remotely possible.

I love Children’s books (Picture books) because pictures are often tell more then words and simple words conceal big ideas.