A rung is a step of a ladder. Ladders are usually made up of many rungs.
Rung is also the past tense of ring.
Something is seared if it is slightly burnt on the outside, by cooking it at a high temperature.
Sent is the past tense of send. For example, "I sent you a parcel in the post".
Signed is the past tense of sign, but usually meaning signing your name as a signature. For example, "I signed for the parcel" or "I have a signed warrant".
