What's the difference between necrologist and necrology?

Necrologist

Definition:

• (n.) One who gives an account of deaths.

Example Sentences:

Necrology

Definition:

• (n.) An account of deaths, or of the dead; a register of deaths; a collection of obituary notices.

Example Sentences:

• (1) A review of SNI necrology records revealed that 55 percent (510 of 924) of the deaths between 1955 and 1984 occurred before 65 years of age.