a device or mechanism designed to prevent injury or accidents by reducing risks or hazards
the surface layer of earth that is solid and people walk on
to become bright by means of color or light
a day fixed by law when we do not have to go to school or work, usually because of a religious or national celebration
known by a lot of people
a structure that has walls, a roof, and sometimes many levels, like an apartment, house, school, etc.
the second largest country in the world that is in the northern part of North America
to make something easier, particularly by improving the situation
to make a text, email, file, etc. be delivered in a digital or electronic way
a device used to send and receive voice messages through invisible signals, often for communication in emergencies, transport, or security
a series of electrical or radio waves carrying data to a radio, television station, or mobile phone
someone who visits a place or travels to different places for pleasure
to go somewhere for a short time, especially to see something
someone who enters a place, such as a building, city, or website, for a particular purpose
a tall and often narrow building that stands alone or is part of a castle, church, or other larger buildings
a box-like device that moves up and down and is used to get to the different levels of a building
to move or carry a thing or person from one location to a different one
without clouds or mist
having an appealing quality
a hard material that is often clear and is used for making windows, bottles, etc.
able to withstand physical stress or pressure due to its solid construction
(of an action) free from danger, harm, or serious risk
something that a person spends time doing, particularly to accomplish a certain purpose
