angstrom vs angstrom unit

angstrom and angstrom unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
angstrom	Yes	No	No	No
angstrom unit	Yes	No	No	No

As nouns, angstrom and angstrom unit are synonyms defined as:

angstrom and angstrom unit: a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

Other synonyms of angstrom include A.

angstrom (noun)	angstrom unit (noun)
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation	a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation