cloves are sweet right? cloves have a pleasant taste and they don't taste "spicy" at all. I occasionally chew some cloves as a mouth freshener and I don't feel any overwhelming spicy-ness like black pepper or chilli pepper
Sichuan peppers are also not spicy at all. They have an intense herbal/mineral/fruity flavor that's hard to find comparisons for but it is nothing like the "heat" you get from any other foods considered hot like chili pepper, black pepper, ginger, raw garlic, etc.
To be clear, black pepper, chilis, and szechuan peppers are all distinct and unrelated plants.