Units of time I use are from the Wiki, but time units in particular tend to be all over the place canonically. And some of the terms I use are fanon things from my days writing on FFN ten years ago under a different username. Different authors can and do use the same terms differently or have their own interpretations of how things work. This is how I think bonds and lifespans would work between humans and Cybertronians.
Time units and how I use them:
Klik= Little over a minute
Breem= little over eight minutes
Vorn= roughly eighty three years or about a human lifespan
Other terms I commonly use:
Ped (some authors use pede)= a Cybertronian’s foot
Servo= I use this one to mean fingers so I can have more nuance, but I’ve seen it used generically as hand by some writers, too
Protoform= canon term. A blank base that needs a spark. Pretty much an empty shell. Canonically created as an adult with a salvaged or newly harvested spark shoved into it and during the war, a Cybertronian might very well come online for the very first time in a war zone (what happened to Getaway). I use it for sparklings, though
Sparkling= fanon term for a Cybertronian infant
Carrier= literally whoever in the relationship is carrying a newly created spark/sparkling
Sire= whoever initiated the act of creating a new spark between the pair to make the other their carrier. In my nonsense, the human partner can be either the carrier or the sire
Bitlet/youngling= Cybertronian child
Spark= life force of a Cybertronian
Spark bonding= merging two sparks or a spark and a soul/spirit/life force together. In my headcanons, this can be a partial bond or a full bond depending on the level of trust between partners. Can be romantic or platonic
Amica Endura= best friend, though it’s a bit more involved than that
Conjunx or Conjunx Endura= fully bonded mates/spouses
Spike and Valve= alien naughty bits
Empurata= the act of taking a Cybertronian’s face and/or hands as a punishment (Shockwave and Whirl in IDW had this done to them)
Shadow Play= editing or removing memories. A forced personality adjustment. (What happened to Senator Shockwave)
Mnemnosurgery= tapping into a Cybertronian’s processor via long needles that extend from the end of the servos to edit or remove memories. Sunder is a mnemnosurgeon
Chirolinguistics= a rather intimate nonverbal language consisting of subtle touches and movements of hands. Drift knows this