hartley vs Hart

hartley and Hart both are nouns.

Word	Noun	Adjective	Verb	Adverb
hartley	Yes	No	No	No
Hart	Yes	No	No	No

As nouns, hartley and Hart are synonyms defined as:

hartley and Hart: a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10.

Other synonyms of hartley include ban, dit.

hartley (noun)	Hart (noun)
a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10.	United States lyricist who collaborated with Richard Rodgers (1895-1943)
	United States playwright who collaborated with George S. Kaufman (1904-1961)
	a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10.