W: (adj) shared [Indirect via unshared] (have in common; held or experienced in common) "two shared valence electrons forming a bond between adjacent nuclei"; "a shared interest in philately"
S: (adj) single, undivided, exclusive (not divided among or brought to bear on more than one object or objective) "judging a contest with a single eye"; "a single devotion to duty"; "undivided affection"; "gained their exclusive attention"
S: (adj) undivided (not separated into parts or shares; constituting an undivided unit) "an undivided interest in the property"; "a full share"