To explain, report, or describe something to one. I was shocked when she related her experiences in the company to me. I can't tell you what it was like for everyone, but I can relate my personal experience to you.

To associate something with something else; to establish something as being similar to or connected with something else. I guess I'd relate the experience to being on a roller coaster.

To associate oneself with someone or something; to feel a sense of kinship with or similarity to someone or something. Having grown up in quite a poor household, I could really relate to the character's struggle to find financial success. I'm worried that my son doesn't seem to relate to any of the kids in his class.