マスク（マスク、masuku）
- mask

The word マスク (masuku) in Japanese primarily means "mask". It refers to a covering worn over the face, usually the nose and mouth, for protection, hygiene, or other purposes. It can also refer to things that are used for the same purpose, such as a face mask for skincare.

⚫︎風邪の時にマスクをします。 Translation: I wear a mask when I have a cold. ⚫︎手術の際に、医者はマスクをつけます。 Translation: Doctors wear masks during surgery. ⚫︎彼女は美容のためにフェイスマスクを使っています。 Translation: She uses a face mask for beauty.

This word is widely used in daily conversation. ⚫︎You'd use マスク when talking about protective masks worn to prevent the spread of germs, such as during a cold or in crowded places. ⚫︎You can also use it to discuss face [マスク]s used for beauty purposes. ⚫︎It is also commonly used in medical contexts.

マスク is written in katakana. This is because it is a loanword from English ("mask").

There aren't direct synonyms for "mask" in the same general sense, but the following can relate to specific situations: ⚫︎顔覆い (kaoooi) - face covering (more formal or general) ⚫︎防毒マスク (boudoku masuku) - gas mask ⚫︎フェイスパック (feisu pakku) - face pack (for skincare) ⚫︎サージカルマスク (saajikaru [マスク]) - surgical [mask] ⚫︎N95マスク (en-nanajyuugomasuku) - N95 [mask]

There aren't direct antonyms, because it depends on the context of the mask. However, we can mention: ⚫︎素顔 (sugao) - bare face. ⚫︎裸 (hadaka) - naked

コロナウイルスの感染を防ぐために、公共の場ではマスクの着用が推奨されています。 ・Translation: Wearing a [mask] is recommended in public places to prevent the spread of the coronavirus. ・Explanation: This sentence explains the use of [masks] during the COVID-19 pandemic to protect oneself and others.

彼女はマスクをして、人混みに行きました。 ・Translation: She went to a crowd wearing a [mask]. ・Explanation: This sentence describes someone wearing a [mask] in a crowded situation, likely for protection.

The word マスク is a direct loanword from the English word "mask." It entered the Japanese language and retains the same meaning.