Definitions

Develop:
-Verb

1.-To expand or enlarge: developed a national corporation into a worldwide business.

2.-To aid in the growth of; strengthen

3.-To improve the quality of; refine

ETYMOLOGY:
French développer, from Old French desveloper : des-, dis- + voloper, to wrap ( possibly of Celtic origin)

http://education.yahoo.com/reference/dictionary/entry/develop

Behavior:

-noun

1.- The manner in which something functions or operates.

2.- The actions or reactions of a person or animal in response to external or internal stimulation.

ETYMOLOGY:
Middle English behavour, from behaven, to behave (on the model of havour, behavior, from Old French avoir, from avoir, to have) ; see behave

http://education.yahoo.com/reference/dictionary/entry/behavior

Colleague:
-noun

1.-A fellow member of a profession, staff, or academic faculty; an associate. See Synonyms at partner.

ETYMOLOGY:
French collègue, from Latin collga : com-, com- + lgre, to depute; see leg- in Indo-European roo.

http://education.yahoo.com/reference/dictionary/entry/colleague