Most of the time when people say "Pentecostal", they mean Church of God, dancing in the aisles, speaking in tongues kind of worship.
In my experience, this kind of worship is all "spirit", neglecting "truth". Many other churches go the other way, they usually have little or no music and it's no more than a glorified bible study.
But like I said, God is infinite, and I have no doubt there are an infinite number of ways to praise his Holy Name.
sounds like the C of C of lore