set or category. Groups that share some things in common. To rank people in society from high to low.

event or group of events.

flowing naturally or supplied to building through pipes and taps. action or movement of runner. To cause an animal to move in a certain direction.

To guard a place or people; protect child, etc..

not same as another or each other.

physically and mentally dependent on particular substance.

process or set of rules to be followed in calculations or other problem-solving operations. A step-by-step problem-solving feature.

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Over, in, across an entire thing or place.

word or phrase preceded by hash sign to identify messages on specific topic. add hashtag to digital content.

To go from one train, bus, etc. and go to another.

engaging in speech. action of talking. To make a formal speech about something.

action of staying where one is or delaying action until particular time or event. To remain in a place until a thing happens.

action or fact of owning, maintaining, or protecting something. To do something that you have promised or agreed.