Explosives are single-use devices, most of which are designed to deal heavy damage to any targets within a given area. However, some explosives deal almost no damage when they detonate; instead, they are meant to summon allies, mark targets, or inflict enemies with status effects. Regardless of its specific effect, any explosive that can be thrown is considered a grenade, and any explosive that can be set as a trap is considered a mine. All explosives are affected by the Demolition Expert perk.
Fallout 4 eGuide INV Explosives