Definition of -ship in English:

suffix

• 1Forming nouns denoting a quality or condition.

  ‘companionship’

  ‘friendship’

• 2Forming nouns denoting status, office, or honour.

  ‘ambassadorship’

  ‘citizenship’

  1. 2.1Forming nouns denoting a tenure of office.
     ‘chairmanship’

• 3Forming nouns denoting a skill in a certain capacity.

  ‘workmanship’

• 4Forming nouns denoting the collective individuals of a group.

  ‘membership’