It's often found in words related to similarity, unity, or sameness, such as:
* Homogeneous: Composed of similar parts or elements
* Homophone: A word that sounds the same as another but has a different meaning
* Homonym: A word that has the same spelling and pronunciation as another but a different meaning
* Homosexual: A person attracted to people of the same sex
* Homology: Similarity in structure or origin between different organisms
Keep in mind that "homo" can also be used in some scientific contexts, such as "homo sapiens" (meaning "wise man"), referring to the human species.