association abbreviation appreciation appropriation elevation generation information initiation operation orientation presentation affiliation application combination congregation conversation degradation deviation isolation pronunciation saturation speculation variation animation circulation communication compensation condensation conservation declaration demonstration determination disposition expectation federation foundation humiliation inclination indication inspiration motivation observation proposition radiation registration regulation relaxation renunciation reservation revelation separation station termination vacation aberration adaptation admiration agitation celebration companion composition concentration confirmation continuation corporation cultivation decoration definition delegation denunciation designation distribution domination excavation explanation fascination hesitation illustration implication innovation installation insulation invitation irritation limitation navigation obligation occasion occupation penetration perforation preparation publication replication resignation resolution simulation vegetation abstraction accession