diff --git a/internal/language/lookup.go b/internal/language/lookup.go
index 9309dc276..231b4fbde 100644
--- a/internal/language/lookup.go
+++ b/internal/language/lookup.go
@@ -50,7 +50,7 @@ func (id Language) Canonicalize() (Language, AliasType) {
 	return normLang(id)
 }
 
-// mapLang returns the mapped langID of id according to mapping m.
+// normLang returns the mapped langID of id according to mapping m.
 func normLang(id Language) (Language, AliasType) {
 	k := sort.Search(len(AliasMap), func(i int) bool {
 		return AliasMap[i].From >= uint16(id)
diff --git a/runes/runes.go b/runes/runes.go
index 71933696f..930e87fed 100644
--- a/runes/runes.go
+++ b/runes/runes.go
@@ -33,7 +33,7 @@ func In(rt *unicode.RangeTable) Set {
 	return setFunc(func(r rune) bool { return unicode.Is(rt, r) })
 }
 
-// In creates a Set with a Contains method that returns true for all runes not
+// NotIn creates a Set with a Contains method that returns true for all runes not
 // in the given RangeTable.
 func NotIn(rt *unicode.RangeTable) Set {
 	return setFunc(func(r rune) bool { return !unicode.Is(rt, r) })
diff --git a/unicode/cldr/collate.go b/unicode/cldr/collate.go
index 056fe7f7f..5794ae482 100644
--- a/unicode/cldr/collate.go
+++ b/unicode/cldr/collate.go
@@ -229,7 +229,7 @@ func skipSpace(s string) string {
 	return strings.TrimLeftFunc(s, unicode.IsSpace)
 }
 
-// consumes returns whether the next byte is ch. If so, it gobbles it by
+// consume returns whether the next byte is ch. If so, it gobbles it by
 // updating s.
 func consume(s *string, ch byte) (ok bool) {
 	if *s == "" || (*s)[0] != ch {