debut
the first public appearance of an entertainer, sports player etc or of something new and important
ex : She debuted in "pink film" s in 1967, at first working in supporting roles.
morph
to develop a new appearance or change into something else, or to make something do this
ex : Even as people try to learn how to use them, computers are morphing into something new.
gadget
a small, useful, and cleverly-designed machine or tool
ex : He showed her several electronic gadgets, such as a watch that you can use as a phone
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rival
a person, group, organization that you compete with in sport, business, a fight etc
ex : Sheena left her job and went to work for a rival company.
penchant
a liking for, an enjoyment of, or a habit of doing something, especially something that other people might not like
ex : The language is lucid, but the author has a penchant for trying to do too many things in one sentence.