hypo.gif (881 octets)   hyponym
The specific term used to designate a member of a class.
X is a hyponym of Y if X is a (kind of) Y.
tree hypo.gif (881 octets) oak an oak is a kind of tree
plant hypo.gif (881 octets) tree a tree  is a kind of plant
dwelling hypo.gif (881 octets) house a house is a kind of dwelling
disatisfaction hypo.gif (881 octets) disappointment disappointment is a kind of disatisfaction

see hypernym (the inverse relation)