Expert live analysis (5)
I believe the answer is:
probe
'analysis' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'expert live' is the wordplay.
'expert' becomes 'pro' (short for professional).
'live' becomes 'be' (synonyms).
'pro'+'be'='PROBE'
Can you help me to learn more?
(Other definitions for probe that I've seen before include "Explore, examine" , "Closely enquire into" , "Question or examine thoroughly" , "Examine searchingly" , "Spacecraft; investigation" .)