Reference

String distance levitate is powered by the stringdist package, which offers a number of string distance measures.
lev_distance()	String distance metrics
String similarity ratio Similarity ratios are friendlier than distance measures when trying to rank strings by similarity.
Simple ratios These measures are useful for comparing individual words or other short strings.
lev_ratio()	String similarity ratio
lev_partial_ratio()	Ratio of the best-matching substring
Token-based ratios Splitting strings into tokens is useful when comparing the similarity of longer phrases.
lev_token_set_ratio()	Matching based on common tokens
lev_token_sort_ratio()	Ordered token matching