join A1

/ˈd͡ʒɔɪn/ make contact or come together

joint B1

/d͡ʒɔɪnt/ involving both houses of a legislature

rejoin B2

/ɹɪˈd͡ʒɔɪn/ To join again; to unite after separation.

conjunction B2

/kənˈd͡ʒʌŋk.ʃn̩/ The act of joining, or condition of being joined.