Genus (noun)

1. A taxonomic category ranking above species and below family and typically consisting of a group of species that share a common ancestor.
2. A group of related species that share certain characteristics.
3. The name given to a group of related organisms.

Origin:

From the latin word "genus", meaning "race, kind".

Examples:

1. The genus Canis includes wolves, dogs, and coyotes.
2. The genus Homo includes modern humans, as well as extinct human species.
3. The genus Felis includes domestic cats and wild cats such as lions and tigers.
4. The genus name is always capitalized and italicized.
5. The genus Rosa includes all species of roses.