唯

only / alone / -ism (in Chinese, a prefix, often combined with a suffix such as 主義|主义[zhu3 yi4] or 論|论[lun4], e.g. 唯理論|唯理论[wei2 li3 lun4], rationalism)

yes

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

short-tailed bird

only; sole

only / sole

to seek nothing but profit (idiom); personal profit before everything / self-seeking

to be a yes-man

to appoint people by favoritism (idiom); nepotism / corrupt appointment

uniqueness

(idiom) to appoint people by favoritism; to practice cronyism (or nepotism)

to appoint people according to their merits (idiom); appointment on the basis of ability and integrity

historical materialism (Marx's theory of history)

to follow obediently

philosophy of idealism, the doctrine that external reality is a product of consciousness