What does "ch'il" mean?
For a really in-depth explanation, see DiegoJaviUnlam's comment here: https://forum.duolingo.com/comment/29895120
Why does orange need ch'il and bilasáana does not..?
Nothing about the dotted underline definitions indicated the need for "ch’il". Perhaps this should be added to one of the underline definitions or should be covered more by previous questions.
We need to study the language, dont confuse it with spelling