a numeric value indicating how conservative the function
should be when searching for suggestions. Values close to 1 are very
conservative
return.na
a logical indicating whether to return a NA or the original
input when no suggestion is found
ignore.words
NULL or a character vector with words to be ignored by the function.
Useful if you are automatizing a workflow and wants the function to ignore
words or phrases such as "not found", "dead", "undetermined", and so on