microtoponym vs place name

microtoponym and place name both are nouns.

Word	Noun	Adjective	Verb	Adverb
microtoponym	Yes	No	No	No
place name	Yes	No	No	No

As nouns, place name is a hypernym of microtoponym; that is, place name is a word with a broader meaning than microtoponym:

microtoponym: a name of a "minor" or small natural feature (e.g., a field, path, bridge, ditch, etc.).
place name: the name by which a geographical place is known

Other hypernyms of microtoponym include toponym.

microtoponym (noun)	place name (noun)
a name of a "minor" or small natural feature (e.g., a field, path, bridge, ditch, etc.).	the name by which a geographical place is known