What is the difference between plug in hybrid and CR-V Hybrid?

Could you please clarify the distinction between a plug-in hybrid and a CR-V Hybrid? I'm curious to understand the key differences in terms of their powertrains, fuel efficiency, range, and perhaps also the driving experience they offer. Additionally, I'm wondering if there are any significant differences in terms of their environmental impact or the maintenance requirements associated with each type of hybrid vehicle. It would be helpful if you could provide a brief comparison to aid in my understanding.