lapse >> laps
Definition: [noun] a brief or temporary failure of concentration, memory, or judgement.
Example: a lapse of concentration in the second set cost her the match
Definition: [noun] an interval or passage of time.
Example: there was a considerable lapse of time between the two events
Definition: [verb] (of a right, privilege, or agreement) become invalid because it is not used, claimed, or renewed; expire.
Example: he let his membership of CND lapse
Definition: [verb] pass gradually into (an inferior state or condition).
Example: the country has lapsed into chaos