Skype
The meaning of the term functionality is that an object of any kind is well suited to properly function and work for the purpose the object was created for.
Software Development is a generic term used for any kind of creation/customisation/modification of Software. Customization is a more specific term used wherein you develop unavailable functionality or adapt it to fit your specific requirements, whether through the use of Software development ("Coding") or through configuring modification opportunities provided within the software or solution. Simplest example being where you setup custom Menus in MSOffice to expand the standard menu options available.
I believe that the word you are looking for is "functionality."
Software
Black-box testing is a term used by software designers and engineers, to describe a method they use to test that the software is working properly. Unlike white-box testing, it examines the software's functionality, without looking at its internal workings.
The term fone means telephone. The word telephone is derived from the Greek. The telephone was first invented by Alexander Graham Bell in 1876. The telephone was the first device that enabled people to communicate directly with each other over long distances.
A plug-in is a piece of software that interacts with another piece of software. For example, I have Firefox as my internet browser. I have a plug-in that makes Firefox give me information on the web page I am visiting. The plug-in only works with Firefox. Any given plug-in is directly associated with a specific piece of software and extends the functionality of the original software. Some software does not support plug-ins so there is either another route to take for enhancements or additional features or you are stuck with what you've got.
it advanced to the telephone.
"Easy to use" is very relative term, however creators of tax software has made attempts to simplify their programs. Turbo Tax, for example, has features that will assist the user, ensuring that they are entering their information correctly as well as offering telephone support.
A big white telephone is a slang term for a toilet, especially when used as a receptacle in which to vomit.
Application software is a term used in the Information Technology industry to describe any software program designed to perform a particular task for the client.
The English word "emulate" if translated to Tagalog or Filipino language would be: gaya, (root word), ginagaya(present form), ginaya (past tense), gagayahin(future tense), panggagaya (past participle), paggaya(noun).