What is this?
battery
What is this?
window shopping
What is this?
penfriend
What is this?
social media
What is this?
landline phone
What is this?
corridor
What is this?
nationality
What is this?
colleague
What is this?
telepathy
What is this?
snail mail
What is this?
device
What is this?
conference
What is this?
cultural event