mjhjmtu

Thanks to @trolley813 for the cool riddle

This Riddle has now 5 different words, which apply to that. If you have free time find more ... currently 4 words are found.

Rules as always:

I have one word which has several (2 or more) meanings

Each of the meanings is a teapot (first, second ...)

Try to figure out the word with my hints.

First hint:

My first teapot fills stadiums

My second too

Second hint:

My first teapot has rythm

My second teapot has no

Third hint:

My first teapot can't hurt

My second teapot hurts someone

Final hint:

My first teapot can make you feel different things

My second teapot can only make you feel pain

Good luck and have fun :)

I'm going to take a guess with

beat as in sound beats and beating someone

My first teapot fills stadiums

sound echoing through a stadium

My second too

Thanks to @user477343: boxing matches held in a stadium.

My first teapot has rythm

yea a sound beat has rhythm

My second teapot has no

Not much rhythm in beating someone down

My first teapot can't hurt

music doesn't hurt

My second teapot hurts someone

beating someone will most likely hurt

My first teapot can make you feel different things

Music can make you feel many things

My second teapot can only make you feel pain

same as before beating down on a person will cause pain.

Is this

ROCK?

My first teapot fill stadiums

As in a rock band

My second too

As in stones

Second hint:
My first teapot has rhythm

Rock music has rhythm

My second teapot has no

Stones do not

Third hint:
My first teapot can't hurt

Rock music can’t hurt you

My second teapot hurts someone

Stones can hurt people

Final hint:
My first teapot can make you feel different things

Rock music makes different people feel different things

My second teapot can only make you feel pain

Stones hurt when people throw them at you

My answer is inspired by and very similar to @El-Guest's answer - based on @Jannis' comment on it, I think the teapots are

Metal

My first teapot fill stadiums

Metal bands fill stadiums

My second too

Metal constructions are used to build stadiums

My first teapot has rythm

Metal music has rhythm

My second teapot has no

Metal as a material does not

My first teapot can't hurt

Metal music doesn't hurt

My second teapot hurts someone

Various weapons are made of metal

My first teapot can make you feel different things

Metal music can invoke different reactions from people

My second teapot can only make you feel pain

Physical contact with metal can often hurt

This is more of a jab than a true guess (and you need some specific knowledge to get this one), but nonetheless, you are:

Lions (the cat/the team)

First Hint:

I'm thinking Roman times, lions in the Colosseum

The team fills their stadium each week

Second Hint:

Lionesses hunting involves coordination (or them being in rhythm)

The team, especially in, say, 2008, was terrible!

Third Hint:

I mean they can, obviously, in the wild but in a zoo (for example), you are safe from them

Being a Lions fan has to be hurt

Final:

Seeing a lion can be scary, exciting, inspiring, etc.

Being a lifelong Lions fan has got to be painful (never won a Superbowl)!

Btw:

Sorry Lion's fans :P