wn: invalid search word

usage: wn word [-hgla] [-n#] -searchtype [-searchtype...] wn [-l] -h Display help text before search output -g Display gloss -l Display license and copyright notice -a Display lexicographer file information -o Display synset offset -s Display sense numbers in synsets -n# Search only sense number # searchtype is at least one of the following: -ants{n|v|a|r} Antonyms -hype{n|v} Hypernyms -hypo{n|v}, -tree{n|v} Hyponyms & Hyponym Tree -entav Verb Entailment -syns{n|v|a|r} Synonyms (ordered by estimated frequency) -smemn Member of Holonyms -ssubn Substance of Holonyms -sprtn Part of Holonyms -membn Has Member Meronyms -subsn Has Substance Meronyms -partn Has Part Meronyms -meron All Meronyms -holon All Holonyms -causv Cause to -pert{a|r} Pertainyms -attr{n|a} Attributes -deri{n|v} Derived Forms -domn{n|v|a|r} Domain -domt{n|v|a|r} Domain Terms -faml{n|v|a|r} Familiarity & Polysemy Count -framv Verb Frames -coor{n|v} Coordinate Terms (sisters) -simsv Synonyms (grouped by similarity of meaning) -hmern Hierarchical Meronyms -hholn Hierarchical Holonyms -grep{n|v|a|r} List of Compound Words -over Overview of Senses