Herbicide refers to a type of substance used to completely or selectively kill weeds, also known as herbicides, to eliminate or inhibit plant growth.
Fungicides, also known as biocides, algicidal agents, microbial killing agents, etc., usually refer to chemical agents that can effectively control or kill microorganisms - bacteria, fungi, and algae - in water systems
Insecticides refer to a type of pesticide that kills pests such as beetles, flies, grubs, nasal bugs, jumping insects, and nearly ten thousand other pests.