Ida Tarbell vs Ida M. Tarbell

Ida Tarbell and Ida M. Tarbell both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ida Tarbell	Yes	No	No	No
Ida M. Tarbell	Yes	No	No	No

As nouns, Ida Tarbell and Ida M. Tarbell are synonyms defined as:

Ida Tarbell and Ida M. Tarbell: United States writer remembered for her muckraking investigations into industries in the early 20th century (1857-1944)

Other synonyms of Ida Tarbell include Ida Minerva Tarbell, Tarbell.

Ida Tarbell (noun)	Ida M. Tarbell (noun)
United States writer remembered for her muckraking investigations into industries in the early 20th century (1857-1944)	United States writer remembered for her muckraking investigations into industries in the early 20th century (1857-1944)