The word Spam has been around for some time as a noun, a proper noun, the name of a canned meat product made mainly from ham (the name is a shortened form of spiced ham). The name was trademarked in 1937 and became a popular food for soldiers during WWII.
In 1970, the British TV comedy series, "Monty Python", had a skit called "Spam", about a resturant where everything on the menu was Spam with something, including Spam with Spam.
When the annoying, irrelevant, or inappropriate messages sent on the internet to a large number of users began showing up, someone connected them with the menu at the restaurant on "Monty Python". The noun spam as a word for these messages is a common noun, a word for any and all such messages. This use of the noun spam has a corresponding verb to spam meaning to send the same email message indiscriminately to (large numbers of users).
A further noun derived from this context is spammer meaning someone who sends such e-mails.
it is gross, just like spam
The proper noun Spam itself is used as an adjective; for example a Spam sandwich or a Spam recipe. The common noun spam can also be used as an adjective; for example a spam overload in my 'in box'.
The word 'noun' is not a verb. The word 'noun' is a noun, a word for a thing.
The noun form of the word "polite" is "politeness".
The word 'brutal' is the adjective form for the noun brute.The noun form for the adjective brutal is brutality.
The word 'daily' is a noun form as a word for a newspaper that is published every day.The word 'daily' is the adjective and adverb form of the noun day.
The word 'real' is a noun form as a word for the monetary unit of BrazilThe noun form of the adjective 'real' is realness.A related noun form is reality.
The word 'lovely' is the adjective form of the noun love.The noun form for the adjective 'lovely' is loveliness.The word 'lovely' is an obsolete noun form as a word for a beautiful woman or a beautiful object.
The word 'partly' is the adverb form of the noun part.
The noun form for the adjective hilarious is hilariousness. A related noun form is hilarity.
The word 'inferior' is a noun form as a word for someone of lower rank or status; a word for a person. The noun form of the adjective inferior is inferiority.
picture is the noun form