As nouns the difference between bylaw and investigation
is that bylaw
is a local custom or law of a settlement or district while investigation
* byrlaw (obsolete)
* by-law, bye-law, byelaw
A local custom or law of a settlement or district.
A rule made by a local authority to regulate its own affairs.
A law or rule governing the internal affairs of an organization (e.g., corporation or business).
* bylaw officer
The act of investigating; the process of inquiring into or following up; research; study; inquiry, especially patient or thorough inquiry or examination; as, the investigations of the philosopher and the mathematician; the investigations of the judge, the moralist.