This is the 9459th most frequent Portuguese word.
comportam
"Comportam" means "behave" or "act" (third person plural of "comportar").
In this sentence, 'comportam' is used to express the ability to contain or endure issues.
Os sistemas comportam falhas eventuais devido ao uso prolongado.
The systems occasionaly endure malfunction due to prolonged use.
Here, 'comportam' is used as part of the reflexive verb 'comportar-se', meaning 'to behave'.
Os alunos comportam-se bem na aula.
The students behave well in class.
Here, 'comportam' is used in a general sense to mean 'they exhibit' or 'contain' characteristics.