4. Double
It is a variable which holds a decimal type data.
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5. Frontend and Backend
Frontend is a part of website that the users interact
with.
Backend is a part of website that the computer or
server interact with.
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6. Function
Functions are part of code which take data, process
it and return a result. You can use one function for
several times.
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7. Integer
It is a variable which holds a whole number only.
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8. Library
It is a collection of files, programs that can be
referenced in the code
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9. Loop
Loop is a construction which will do something until
some conditions exist.
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10. String
It is a variable which holds sequences or characters.
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11. Variable
Variable is a value which have own name. It is like a
container where you can put anything.
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