function A2

/ˈfʊŋ(k)ʃən/ What something is used for or what it does.

refuge B2

/ˈɹɛfjuːd͡ʒ/ A safe place where you are protected from danger or trouble.

refugee B2

/ˈɹɛfjʊd͡ʒiː/ A person who has been forced to leave their country because of war, persecution, or disaster.

subterfuge C2

/ˈsʌbtəɹˌfjuːd͡ʒ/ something intended to misrepresent the true nature of an activity