Much of the functionality between Zoom meetings and Zoom webinars is similar.

Some key differences surround the ability of participants to unmute themselves and see fellow participants, the availability of breakout rooms and non-verbal feedback options (i.e. raise hand and applause). 

For a full list of the differences, see this article from Zoom:

https://support.zoom.us/hc/en-us/articles/115005474943-Meeting-and-webinar-comparison