counter for insects (used only in biology) / counter for certain relatively large animals, or for livestock animals; "head"

head

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

not always, not necessarily / not completely / not exactly, not strictly speaking, not technically

stiffen / for a person to freeze, for one's expression to freeze

ferromagnetism

strong shaking