"avails" in the noun sense
1. avail, help, service
a means of serving
"of no avail"
"there's no help for it"
"avails" in the verb sense
1. avail
use to one's advantage
"He availed himself of the available resources"
2. avail
be of use to, be useful to
"It will avail them to dispose of their booty"
3. avail, help
take or use
"She helped herself to some of the office supplies"
Source: WordNet® (An amazing lexical database of English)
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