This is the 9481st most frequent Portuguese word.
com
"Com" means "with."
In this sentence, 'com' is a preposition meaning 'with' to indicate the person being interacted with.
Eu falei com o professor ontem.
I talked to the teacher yesterday.
Here, 'com' is used as a preposition meaning 'using' or 'containing' to signify what was involved in the creation of something.
O bolo foi feito com chocolate amargo.
The cake was made with dark chocolate.
This instance uses 'com' to mean 'alongside' or 'accompanied by,' indicating companionship.