円錐: cone / 塩水: brine

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening

put away

a state of lethargy or despondency

(chemistry) transition state

deadlock, standstill

(medicine) Synonym of 遷延性意識障害 (sen'ensei ishiki shōgai, “persistent vegetative state”)

(electronics, computing) race condition