Yes, "controller" is a common noun. It refers to a general category of devices or individuals that manage or regulate something, such as in technology or finance. Unlike a proper noun, which names a specific entity, "controller" does not identify a unique person, place, or organization.
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
A common noun.
Most definitely a common noun.
Camel is a common noun.
Th word tail is a common noun because the first letter of a proper noun is capitalized.
it is re@lly @ common noun
common
The noun cassette is a common noun.
Yes, it is a common noun, not a proper noun.
is drawing a common noun