Nouns

(n)aim, object, objective, targetthe goal intended to be attained (and which is believed to be attainable)“the sole object of her trip was to see her children”
(n)objective, objective lens, object lens, object glassthe lens or system of lenses in a telescope or microscope that is nearest the object being viewed

Adjectives

(a)objective, nonsubjectiveundistorted by emotion or personal bias; based on observable phenomena“an objective appraisal”, “objective evidence”
(a)objective, accusativeserving as or indicating the object of a verb or of certain prepositions and used for certain other purposes“objective case”, “accusative endings”
(s)objectiveemphasizing or expressing things as perceived without distortion of personal feelings or interpretation“objective art”
(s)objectivebelonging to immediate experience of actual things or events“objective benefits”, “an objective example”, “there is no objective evidence of anything of the kind”