" -en" is a suffix that essentially means "made of", and is used in only a few situations:
flaxen
wooden
oaken (nearly obsolete)
woolen (nearly obsolete)
golden
I can �t think of any others at the moment.
Flaxen, woolen and oaken mean "made of flax (linen), wool or oak". Flaxen can also mean "having the color of flax", as in Debussey �s "The Girl with the Flaxen Hair".
Wooden can mean "made of wood" or "wood-like in appearance or characteristics". An actor �s performance is sometimes described as being wooden.
Floors can be called "wooden" or "wood".
Golden can mean "made of gold" or "similar to gold in color or quality".
Jason and the Argonauts sought the golden (made of gold) fleece.
This is a golden opportunity
Look at the field of golden flowers.
Gold is often used to describe the color, rather than the substance.
Have you seen my gold tie?
May I borrow your gold earrings? (They could be actual gold or just the color of gold)
I hope this helps.
Bruce