The difference between conceptual meaning and connotative meaning mentioned by Leech

I remember that conceptual meaning/negative meaning is the meaning of this word. For example, if you say that a dog is an animal like a dog and the connotation is the connotation, or if you talk about this word, people's understanding, for example, when it comes to dogs, the connotation is loyalty, running dogs, friends, status, and so on; For another example, the conceptual meaning of the sun refers to the sun, and its connotations include brightness and warmth.