Han unification
Han unification is an effort by the authors of Unicode and the Universal Character Set to map multiple character sets of the Han characters of the so-called CJK languages into a single set of unified characters. Han characters are a feature shared in common by written Chinese (hanzi), Japanese (kanji), and Korean (hanja).

Modern Chinese, Japanese and Korean typefaces typically use regional or historical variants of a given Han character. In the formulation of Unicode, an attempt was made to unify these variants by considering them different glyphs representing the same "grapheme", or orthographic unit, hence, "Han unification", with the resulting character repertoire sometimes contracted to Unihan. Nevertheless, many characters have regional variants assigned to different code points, such as Traditional (U+500B) versus Simplified (U+4E2A).

Unihan can also refer to the Unihan Database maintained by the Unicode Consortium, which provides information about all of the unified Han characters encoded in the Unicode Standard, including mappings to various national and industry standards, indices into standard dictionaries, encoded variants, pronunciations in various languages, and an English definition. The database is available to the public as text files and via an interactive website. The latter also includes representative glyphs and definitions for compound words drawn from the free Japanese EDICT and Chinese CEDICT dictionary projects (which are provided for convenience and are not a formal part of the Unicode Standard).
Q8819
Unicode
MISC
Q777955
Universal Character Set
MEDIA
Q184759
character set
Concept
Q8201
Han characters
Concept
Q53764732
CJK
ORG
Q2545446
characters
Concept
Q7850
Chinese
Concept
Q8201
hanzi
Concept
Q5287
Japanese
ORG
Q82772
kanji
Concept
Q9176
Korean
Concept
Q485619
hanja
Concept
Q17451
typeface
Concept
Q837611
variants of a given Han character
Concept
Q36975
glyphs
Concept
Q2545446
grapheme
Concept
Q43091
orthographic
Concept
Q1105784
code points
Concept
Q178528
Traditional
Concept
Q185614
Simplified
Concept
Q1572774
Unicode Consortium
ORG
Q3045873
EDICT
MEDIA
Q2931247
CEDICT
MEDIA
Q14629298
Han unification
Concept
Q14629298
Han unification
Concept
++500^^http://www.w3.org/2001/XMLSchema#decimal
+500
NUMBER
++4^^http://www.w3.org/2001/XMLSchema#decimal
+4
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
instance of
subclass of
writing system
part of
writing system