Picture a gap that needs filling, and the thing you reach for to fill it. A in the shed is an implement because the job has a hole in it — you need something to dig with, and the fills that need. The verb is the same move with a plan instead of a hole in the ground: a decision has been made but nothing has happened yet, and to implement it is to fill in that empty space with real action until the plan is complete. One picture, two shapes: the tool that fills a need, and the doing that fills out a plan.
From the word’s history
The noun came into English in the mid-15c from Late Latin implementem, 'a filling up', from Latin implere 'to fill up, make full' (in- 'into' + plere 'to fill'). Its first English use was a supplementary payment needed to complete a repayment; by the 1530s it had settled on 'a workman's tool'. The verb is much later (1707, originally Scottish legal English) and was formed from the noun, meaning 'to complete, carry into effect'. So the tool and the action are the same idea in two shapes: whatever supplies what is still missing so the job is whole.
名詞在十五世紀中期進入英文，來自晚期拉丁文 implementem（填滿），源自拉丁文 implere「填滿、使完整」（in- 進入 + plere 填）。最早在英文裡指的是「為了還清欠款而補上的那筆錢」，到了 1530 年代才定型成「工匠的器具」。動詞晚得多（1707 年，最初是蘇格蘭的法律用語），是從名詞造出來的，意思是「使完成、付諸實行」。所以器具和執行其實是同一個想法的兩種樣子：補上還缺的那一塊，讓事情變得完整。
Online Etymology Dictionary (etymonline.com), entry 'implement' — https://www.etymonline.com/word/implement
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原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
implementverb/ˈɪmpləmənt/
- 1
To bring about; to put into practice; to carry out.
- Near-synonyms: realize, actualize, materialize; embody; accomplish
- It’s a good thought, but it will be a difficult thing to implement.
- 2
computingengineeringmathematicsTo bring about; to put into practice; to carry out.
implementnoun/ˈɪmpləmənt/
- 1
A tool or instrument for working with.
- farming implements
- agricultural implements
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。