Codex - Notes on the Rebus

Section 1
"Notes on the Rebus" "They say those with bad intentions will never understand the Rebus. It does not open itself up to the undeserving." "Three + bears. Yellow + wool. Whale + juice." "I can't make sense of this. I have no idea which type of bear it's supposed to be. The image of bears is stylized, and there are fifteen unique words for bear in their language. That's even sillier given they have no bears on the island, as far as I know." "Tonic - leaves. Black Isle + Black Rock." "None of these seem to form a separate word in combination with the other! I have no idea how they work. Seems like a sophisticated knowledge of their language is required for this." "Trouser Truffle. Bean + Pouch (or is it purse?)" "I have literally no idea on this one. If I ever crack this, I'll not be telling anyone. All I'll have achieved is the right to keep their secret safe. Perhaps for my silence, they'll reward me with a research post at Panyana. That's if they ever choose to let a man enrol!"