This is the 157th most frequent Portuguese word.
vão
"Vão": gap, void, or meaningless; can also mean "they go" (verb form).
In this context, 'vão' is a noun, meaning 'gap' or 'space.'
O vão entre as estruturas precisa ser preenchido.
The gap between the structures needs to be filled.
Here, 'vão' is used as the present-tense plural form of the verb 'ir,' meaning 'go.'
Os trabalhadores vão para casa após o expediente.
The workers go home after the workday.
Here, 'vão' is used as a noun meaning 'open area.'