Lemmas
compares the %[collocate|collocates]% of two different %[lemma|lemmas]%
Word forms
compares the %[collocate|collocates]% of two different %[wordForm|word forms]% that belong to the same %[lemma]%, e.g. compares the collocates of is and are
Subcorpora
compares the %[collocate|collocates]% of the same lemma found in two different %[subcorpus|subcorpora]% of the same corpus