充作

chōngzuò
  1. to serve as
  2. to be a substitute for

CEDICT

  1. (of an unqualified person or thing) to serve as; to act as; to play the role of
  2. to serve as; to act as; to play the role of

Wiktionary

當做、假冒。如：「他拿偽鈔充作真鈔使用，當場遭人識破。」也作「充為」。

重編國語辭典

Entry Composition

1 充 chōng
  1. sufficient; full
  2. to fill
  3. to serve as; to act as
  4. to act falsely as; to pose as
2 作 zuò
  1. to do; to engage in
  2. to write; to compose
  3. to pretend; to feign
  4. to regard as; to consider to be
  5. to be; to act the part of
  6. to feel (itchy, nauseous etc)
  7. writings; works

Related entries

充當 chōngdāng
  1. to serve as
  2. to act as
  3. to play the role of
我为你充当导游。

I'll act as a guide for you.

Source: Tatoeba

以資 yǐzī
  1. by way of
  2. to serve as
用作 yòngzuò
  1. to use for the purpose of
  2. to serve as
墨汁用作染料时会产生有趣的图案。

India ink produces an interesting pattern when used as a dye.

Source: Tatoeba

擔任 dānrèn
  1. to hold a governmental office or post
  2. to assume office of
  3. to take charge of
  4. to serve as
他擔任我的嚮導。

He acted as my guide.

Source: Tatoeba

為 wéi
  1. as (in the capacity of)
  2. to take sth as
  3. to act as
  4. to serve as
  5. to behave as
  6. to become
  7. to be
  8. to do
  9. by (in the passive voice)
眼見為憑。

To see is to believe.

Source: Tatoeba