I had to look for the excerpt attached to this question, and here is my answer:
The speaker in the excerpt given was Grendel and here, he was describing about himself at how he reacts and acts in times of arguments. Based on this excerpt above him, this shows that he is just PRACTICAL based on how he responds to the given situation.
They are usually called a "Thesaurus".
Electricity and stove a fridge , true
