As far as I can find out, neither of these words are a root word.
position
position or coupon
Misplace
There is no prefix. Pos is the root word. -ure is the suffix.
second syllable
The word possessed has two syllables. Pos-sessed.
position or coupon
The root -pon- means "put" or "place" and comes from the Latin verb ponere.
Misplace
The root word pos means to place or put. Some words that contain this are expose, posture, postpone, poster, etc.
nothing but pos-
The root syllable 'pos-' is a contracted form of the adjective 'potis'. The adjective is the actual root word. The root syllable is its shortened form. Either way the meaning is capable.
There is no prefix. Pos is the root word. -ure is the suffix.
pos
Position
Parents over shoulder
Upright.
Pos is slang for the word pues which means "Well,..."Que hiciste hoy? What did you do today?Pos fui a la playa para tomar el sol. Well, I went to the beach to sunbathe.