Noticeably different from others; distinctive.
Separate in place; not conjunct or united; with from.
Different from one another (with the preferable adposition being "from").
Capable of being perceived very clearly.
Not known; unidentified; not well known.
A variable (usually x, y or z) whose value is to be found.
A person of no identity; a nonentity
Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.