Why are there five different kinds of "master" in NT?

master: didaskalos: teachers of babes, doctors of law

master: oikodespotēs: householder, master of house having servants

master: rhabbi: who love to be called "Rabbi, Rabbi": double minded

master: kyrios: a possessor: mingled mixture of God and mammon

Master: kathēgētēs: your true spiritual guide, the Christ: one-ness

No man can serve more than one master,

but children tend to serve more than one.

So Christ is called the head of every man,

but children tend to have several heads,

tudors and governors they're under.

mastery: agōnizomai: strives, fights adversaires, contends: battle mode.

But Christ, y(our) master, is our peace, above and beyond battle modes.

In Christ mode there's no battle to fight,

for the adversary: the law: is abolished;

so it's more like awaring then like fighting,

not now as a servant, but above a servant.

Servants are know nots in John 15:15, and

children differ nothing from servants: Gal 4.

So a man should put away childish things

like striving, and fighting, and contending,

as it's left vs right divisional, not peaceful.

Harmless: is above of under/above,

not just right to make others wrong.