act of upgrading something. To improve something in terms of quality.

To move from one country or place to live or work.

When one thing is replaced by another.

To need something, to make it necessary.

act or process bringing change. Acts of making or becoming something else. To exchange one kind of money for another.

raised surface for standing on. Areas from which you board a train at a station.

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.

action of helping or doing work for someone. Maintenance of machineries so it runs well, e.g. cars. To maintain a piece of machinery so it runs well.

television drama shown in small number of episodes. .

person or thing that develops something. People who develop real estate.

devoted to task or purpose. To give your energy, time, etc. completely.

need for particular purpose.

Amount of food you are given on your plate. To make something better or less difficult.

To sell a set of products at a lower price.