action of person or things that taps. To move feet/fingers to make light regular sounds.

activity natural to or purpose of person or thing. operate in particular way.

thing chosen. Rights to buy or sell at a certain price and time. buy or sell option on.

state or condition of being difficult.

Being the accepted normal level of quality. Principle of behaving in a moral way.

property of affecting eye by reflecting or emitting light. Qualities of things you can see, e.g. red, blue. change colour of.

Occasion when something can be seen, e.g. a movie. To let someone see something; display.

Things you read (book, magazines and web pages). Text you are understanding or reading to others. To predict your future from cards, a crystal ball.

edge or border. Edges or borders of a page on above, below. provide with margin.

act or process bringing change. Acts of making or becoming something else. To replace something with another thing.

piece of written, printed, or electronic matter that provides information or evidence. To support an opinion with recorded evidence.

more distant in space. at, to, or by greater distance. (Used to introduce an additional point); also. help or promote.

(in printing or writing) amount of space put between successive words, etc.. To make a certain distance or time between.

concentrated form of something. To cause to be present in large amount or number.