Englishfor English speakers
backtracking
noun
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(countable, uncountable) The act of one who, or that which, backtracks; a retracing of one's steps.
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(aviation) The usage of a runway as a taxiway, especially at private strips and smaller airports.
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(computer science) The act of building all possible solutions to a problem incrementally, abandoning any candidate solution if it cannot lead to a valid solution.
investigation
Noun
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An investigation is a careful look at a crime, problem, etc. to find the truth or a solution.
Researchers were conducting further investigations into the connection between smoking and lung disease.
The cause of the fire is currently under investigation.