What is difference between Normal and Perpendicular?

Are normal to surface and perpendicular same thing?
What is difference between normal and perpendicular to a surface?
How can you differentiate between normal to surface and perpendicular?
This video is about all the queries related to normal and perpendicular to surface. Here you will find perfect answer with concept and logic.
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[@SanthoshKana]

🎉🎉❤good sir

[@KunalGaurav-wm1zq]

Very nice 🎉🎉

[@sdphysics100]

Thanks and welcome
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[@navinkumar-bw2nm]

Super sr.

[@sdphysics100]

@@navinkumar-bw2nm thanks and welcome 🤗

[@investigatoryprojects9763]

Very good sir👍

[@aftabiraki5244]

Waw very nice explain

[@sdphysics100]

Thanks and welcome

[@shivsahayashukla4532]

Nicely explained sir . But as per my understanding both the words perpendicular and normal represent the same geometrical meaning.

[@sdphysics100]

For a point both are same but have different meaning for plane and curved surface. 9n curved surface its always called normal not Perpendicular, as perpendicular mean a line making 90 degree with the surface .

[@shivsahayashukla4532]

They are synonymous. like saying, multiply two numbers or take product of two number.

[@shivsahayashukla4532]

But no doubt there must be a subtle difference in them otherwise why to invent two new words for the same geometrical incident.