ir

1. to go
2. to work, function, run

ser

• Verb

  1. to be
  2. to be; forms the passive voice
  3. to be (to have as one’s place of origin)
  4. to be (someone’s); to belong to
  5. to be for; to be to (to have as its purpose)
  6. to be; indicates persistence or reiteration

• Noun