arroba vs weight unit

arroba and weight unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
arroba	Yes	No	No	No
weight unit	Yes	No	No	No

As nouns, weight unit is a hypernym of arroba; that is, weight unit is a word with a broader meaning than arroba:

Other hypernyms of arroba include weight.

arroba (noun)	weight unit (noun)
a unit of weight used in some Spanish speaking countries	a unit used to measure weight
a liquid measure (with different values) used in some Spanish speaking countries	a decimal unit of weight based on the gram