A compound subject is one which consists of more than one noun.
When the subject of a sentence is made up of two or more elements, it's called a compound subject. The individual elements in a compound subject are joined by words like and and or (called coordinating conjunctions) or pairings like either/or and neither/nor (called correlative conjunctions).
A clean driving licence, sales experience and team spirit are essential.
A fool and his money are easily parted.
The pigeon and the falcon fell from view.
My wife and I cannot attend unfortunately. ("I" is a noun - a pronoun.)
Singular or Plural Verb?When and is used to join the elements in a compound subject, the compound subject is treated as plural.
When using or, either/or or neither/nor, you have to consider whether the verb should be singular or plural. Here is a lesson on whether to use a singular or plural verb with or, either/or or neither/nor.
It is possible to end a compound subject with a comma to group it neatly for your readers. This is not a popular practice amongst grammarians. However, if you think it helps, do it.
Using a singular or plural verb with or, either/or or neither/nor
Glossary of grammatical terms
Click on the one with a compound subject: