Each of these sets of five words has an odd member out. The other four words fall under a specific category, which can then be further generalized with a single word. Once you discover each of the five odd words out, those five words will come together to form a category of their own! Are you up to the challenge?
Word sets:
1.
Coffee
Kale
Bananas
Beer
Artichokes
2.
Hard Rock
Jazz
Funk
Disco
New Age
3.
Sea Star
Whale
Mussel
Bird
Bull
4.
Skunk
Red Rose
Rain
Trash
Carrion Flower
5.
Balderdash
Monopoly
Trouble
Life
Parcheesi
EDIT: I wasn't clear enough with one facet of the puzzle. The categories that each group is sorted into can be generalized into one word "super-categories", which very generally (or in some cases, specifically) describe how each group is perceived. These one word super-categories then will become their own category, at which point the puzzle should end with a pretty clear understanding of how the words were chosen.
EDIT2: To see if I can nudge this along, here's a hint:
The backbone of the puzzle is the category which can be formed by the single-word "super-categories" of the five existing categories. The number of elements in the category is an important hint that can potentially guide you towards the solution.
EDIT3: Another day, another hint!
I used the phrase "how each group is perceived" earlier when describing the one word super-categories - that terminology was very specifically on purpose. Your perception of these groups will be very important to really figuring out the crux of the puzzle.