A seminar is a gathering of people who wish to learn about a particular topic. This could be an intensive training course, group discussion or learning from an individual or group of experts. Usually seminars are hosted by academic institutes or professional or commercial groups.
However, seminars can also be hosted by individual organisations for the purpose of training their staff, colleagues and peers, and in some cases using data collected from the seminar to make important decisions about the future of the organisation.
A webinar is also an opportunity to gather people together around a topic or interest for the purpose of discussion and learning. However, a webinar is mostly used by organisations as a marketing tool to find and engage an external audience for the purpose of lead generation, which they nurture through the webinar’s content.
The easiest way to think about it, is that a seminar is an internal event for your organisation and a webinar is an external marketing tool.