"the office or dignity of a mayor," late 15c., from mayor + -ship.
"acquaintance with the skill of a good seaman," 1766, from seaman + -ship.
"motherhood, conduct befitting a mother," mid-15c., from mother (n.1) + -ship.
"the business of an authorized trader," 1916, from dealer + -ship.
"state or office of a professor," 1640s, from professor + -ship.