Among the morphological frequentalia of ergativity one may mention: the morphological category of words that are syntactically connected with nouns (verbs, adjectives, pronouns); the opposition of alienable and inalienable possession with nouns; number agreement of transitive verbs with direct object and of intransitive verbs with subject (or compensating it by suppletion of the verb stem).
Standardized
IF alignment is predominantly ergative, THEN there tend to be: (i) a special morphological category of words syntactically connected with nouns (i.e., attributive forms of verbs, adjectives, pronouns); (ii) an opposition of alienable and inalienable possession; (iii) number agreement of transitive verbs with direct object and of intransitive verbs with subject (perhaps expressed by suppletion of the verb stem).