[WSDL 2.0 Term] Service [Description] Contains a set of system functions that have been exposed to the Web-based protocols. [WSDL 1.1 Term] 
Service
S e r v i c e
P o r t
B i n d i n g
P o r t T y p e
O p e r a t i o n
M e s s a g e
T y p e s