👩‍🏫 Usage of ‘의’

• '의' is a particle that makes the foreword act as an adnominal phrase.
👄 When it uses as a particle, most of the time it pronunced ‘에[e]’, without an accent.

• The meanings of '의' are below.

🌳 Mostly as same as 'of'.
👉 Map of soul = 영혼의 지도,

🌳 is as same as ''s', to form possesive.
👉 Jane's ring = 제인의 반지

🌳 indicates the proceeding word is a metaphor for the latter word.
👉 Margaret Thatcher, the Iron lady. = 철의 여인 마가렛 대처

🌳 indicates the proceeding word meterial of the latter word.
👉 pure gold jewerly = 순금의 보석

🌳 indicates that something belongs or related to someone. as same as my/his/hers/ours/theirs.
in this usage, '내', '네' can be used insted of '나의', '너의'
👉 my hat = 나의(내) 모자, her book = 그녀의 책

🌳 indicates the proceeding word is a target of course or goal or something for the latter word.
👉 triumpeal path = 승리의 길

🌳 indicates where an object occurs or is located. If you omit it when writing, that is also natural.
👉 summer sea = 여름(의) 바다

Hope this makes you clear.