Answer:
1.)Entrance and entrance are two words that are spelled identically but are pronounced differently and have different meanings, which makes them heteronyms. These word pairs are often misused words
2.)A no smoking sign in a place is a notice to say that smoking is forbidden in that place.
3.)Silent mode is a setting available on mobile phones and pagers that, when activated, disables the ringtones and, in some cases, also the vibrating alerts or alarm.
4.)No facemask, no entry policy was adapted by every institution/organization whether public or private.
Explanation:
