No, that is skills or proficiencies depending on what edition you are playing. To quote the 3.5e player's guide -since I don't recall where I saved the 5e one:
Your intelligence skill works in tandem with your proficiencies to determine whether or not your character knows something. Ergo your intelligence does, in fact, govern your character's accumulated knowledge. Your proficiencies take it a step further by defining what sort of more specialized knowledge you focused on.
For example, using that version since I have it on hand and am much more intimately knowledgeable on it - a character with an 18 intelligence score may know a whole lot about knowledge (medicine) and knowledge (the planes) but clearly have to defer to an intelligence 6 character on knowledge (history) because they didn't invest in that knowledge. Intelligence has a potential toward knowledge, but it doesn't necessarily apply. In fact, you can have a character with high intelligence with no specialized knowledge at all if they put all their skill points into jumping, hiding, moving silently, and such. Or, to use 5e, if their proficiencies are all in charisma and physical things. I have a few skill levels invested in knowledge (3.5e) but someone less intelligent than myself may very well be proficient with knowledge (5e).
Someone with an intelligence of 20 gets a +5 to all knowledge checks. Someone with 8 INT but proficiency in, say, history and is level 1 would have only a +1. That means the person with the higher intelligence is more knowledgeable in the field of history despite not having made it their focus of study and therefore lacking that proficiency. The low INT history professor won't catch up until level 17 and will never actually surpass the 20 INT guy.
You could argue that your high INT aids your knowledge rolls because it enhanced the pace of your learning while you studied the various disciplines off-screen, but that is a purely semantical argument that doesn't really mean anything to the post you initially addressed. Unless you thought I didn't know about proficiencies and were trying to correct that because you assumed I thought intelligence was the only factor in the rolls.
And none of this contradicts my ultimate point that having high or low INT doesn't necessarily mean your character is "intelligent" in the broader way most people, and the OP, mean when they use the term. The wisdom stat is every bit as important to not being a moron as intelligence is.
