An expert in something knows a lot about it and so is highly skilled at it.
When you experiment, you do a scientific test to figure something out.
Someone who has experience in something knows a great deal about it because they have been involved in it for so long.
Derived from, or pertaining to, experience.
Pertaining to experiment; founded on, or derived from, experiment or trial; as, experimental science; given to, or skilled in, experiment; as, an experimental philosopher.
The act of experimenting; practice by experiment.
skill or technique
In a skillful or dexterous manner; adroitly; with readiness and accuracy.
Not having experience; unskilled; naive.
not doing in a highly skillful way
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