Mentoring and coaching are often confused with each other, even though they are related they are not the same. A mentor may provide coaching but a coach may not provide mentoring for all mentees.

A coach is involved for a short period of time, and is task oriented. The focus by coaching is on concrete issues such as managing more effectively. (1)
In comparison to a coach, a mentor is for a longer period of time and it is relationship oriented. A mentor relationship is seeking to provide a safe environment for the mentee.
A mentor can help the mentee in a particular field such as leadership, finance or product management.
To have a successful process it is important that the mentor and mentee develops a rapport and an agenda to keep track of the processes that they are making. (2)
Resources :
1 https://www.management-mentors.com/resources/coaching-mentoring-differences
2. https://www.apm.org.uk/blog/coaching-vs-mentoring-why-the-difference-matters/