Is epithelial tissue a connective tissue?

Areolar connective tissue, which makes up the lamina propria.

No, it does not. But it does have relatively few cells and a large amount of extracellular matrix.

skin

Epithelial tissue is what makes up part of the skin, the linings of internal body cavities (such as the stomach lining), and some specialized epithelial tissues make up the endocrine and exocrine...

epithelial tissues are tightly packed sheets of cells. They to protect the body (ie. you skin), absorb nutrients (ie. in the blood vessels and intestines) and secrete fluids (ie. sweat, mucus, oil)....