Game concept
Opinion
The game also links it as Opinions.
From the game's encyclopedia
Every Character has a one-way Opinion of every other Character, represented by a value ranging from -100 to +100.
The Opinion that another character has of you is of crucial importance, for it will drive their behavior!
You should be especially wary of the Opinions of your Powerful Vassals, Spymaster and Spouse.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Opinion is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Every Character has a one-way Opinion of every other Character, represented by a value ranging from -100 to +100." It covers Clergy Opinion and Secular Opinion. The game also links it as Opinions. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.