The term 'prefix with -morph' refers to four different words that all share the same prefix, '-morph'. The first word is 'endo', which means 'WITHIN' or 'INNER'. The second word is 'ecto', which means 'OUTSIDE' or 'OUTER'. The third word is 'exo', which means 'OUTSIDE of' or 'BEYOND'. The fourth word is 'meso', which means 'MIDDLE' or 'in between'. All four words are used to describe different aspects of a particular object or phenomenon.