This phish-related lingo is used, without apology, throughout the manual and WWW site:

minnow = a (typically small) stand-alone application, run as a process
school = a set of duplicate minnows, swimming (working) together in coordinated fashion
hook = a connection between two schools in a defined communication pattern
net(work) = a PHISH program, consisting of one or more schools, hooked together to perform a calculation
bait.py = a tool for creating PHISH nets from an input script
wrapper = a PHISH wrapper of the library for Python
tales = the PHISH manual