senior /ˈsiːn.jər/ /ˈsiːnjə/
senile /ˈsiːnaɪl/ /ˈsiːnaɪl/
old /oʊld/ /əʊld/
aged /eɪdʒd/ /eɪdʒd/
senior citizen /ˌsiːniər ˈsɪtɪzn/ /ˌsiːniə ˈsɪtɪzn/