助攻 [－－]

Jyutping zo6 gung1
Pinyin zhù gōng

Definitions (粵典–words.hk)
  1. 動詞
    協助​進攻
    to assist (in an attack)
Definitions (Wiktionary)
  1. verb
    to assist; to help score a goal, etc.
  2. verb
    to make a secondary attack
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）

助攻 [－－]

Jyutping
Pinyin zhù gōng

Definitions (CC-CEDICT)
  1. (military) to mount a secondary attack
  2. (fig.) to assist in tackling a problem
  3. (sports) to participate in a play in which a teammate scores (i.e. perform an assist)
Examples (粵典–words.hk)
  1. Cantonese
    矮脚虎汤玛斯虽然身材矮小但身手不凡，不单3分波奇准，助攻、抢篮板都有令人惊喜嘅表现。
    矮腳虎湯瑪斯雖然身材矮小但身手不凡，不單3分波奇準，助攻、搶籃板都有令人驚喜嘅表現。
    • Thomas is short but robust, he not only gives out deadly accurate 3 point shots, his performance in assists and rebounds are also stunning.
  2. Cantonese
    佢咁独食，竟然都有两球助攻，真系估佢唔到。
    佢咁獨食，竟然都有兩球助攻，真係估佢唔到。
    • Despite being a selfish player, he actually managed to notch up two assists in the match. Now that's unexpected.