What's the difference between byname and heathenry?

Byname

Definition:

• (v. t.) To give a nickname to.

Example Sentences:

• (1) An antibody specific for chromomycin A3 (CHM; byname, toyomycin) was produced in sufficiently high titer in rabbits by immunization with a CHM-bovine serum albumin conjugate, prepared using diazotized p-aminobenzoic acid as a coupling agent.

Heathenry

Definition:

• (n.) The state, quality, or character of the heathen.
• (n.) Heathendom; heathen nations.

Example Sentences: