given chatbots usually just use LLMs to generate responses and what we call "LLMs" are often just prompt processors on top of an actual LLM, it might be better to talk about them using terms referring to their function- hence chatbots.
but also: since LLM is annoying to say as an acronym out loud, maybe it would make sense to turn it into a phonetic neologism like "lilim". i like this partially because it is easy to say, but also it's technically an alternate spelling for lilin, a sort of night-monster from Jewish folklore, and that feels correct to me.