This is the 5623rd most frequent Catalan word.
ellis
"Ellis" is not a Catalan word. It may be a proper noun or misspelling.
In this sentence, 'Ellis' is used as a third-person plural pronoun referring to a group of individuals.
Ellis són estudiants de la universitat.
They are university students.
Here, 'Ellis' emphasizes the subject 'they' showing action taken by the group.
Ellis han decidit anar al cine aquesta tarda.
They have decided to go to the cinema this afternoon.
In this sentence, 'Ellis' is the object pronoun 'them', referred to in third person plural.