peps/o
-pepsia means digestion.
The noun form of the verb to digest is digestion, a concrete noun, a word for a physical process.The noun digestion is sometimes used in an abstract context, for example:He worked long hours on the digestion of the information he had compiled.The word 'digest' is also a concrete noun as a word for a collection of previously published material usually in edited or condensed form.
The combining form hist/o means
Phagia or phagy mean to eat or swallow and pepsia means to digest. For instance dysphagia is difficulty swallowing, while dyspepsia is difficulty digesting.Phagia means to eat.
Xeno- is the combining form meaning strange or other.
Combining form derm/o means: skin
The combining form that means "nail" is onych/o.
Combining form for shape
A hump is not a medical term, so I can't give you the correct combining form.
The prefix hepta- means seven.
The combining form that means hidden is "crypt-" as in "cryptic" or "cryptology."