Englishfor English speakers
active
Adjective
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If someone is active, he or she does exercise often or participates often.
She was such an active 80-year-old that she ran the .
Jenkins is an active member of the since he goes to all the meetings.
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A sentence is active if its subject does the action.
"Athena helped Odysseus" is an active sentence because Athena is the one who helped.
directory
Noun
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A directory is a book or list of names, usually in alphabetical order with telephone numbers or addresses.
He checked he number in the directory.
lookup
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noun
an operation that determines whether one or more of a set of items has a specified property
they wrote a program to do a table lookup