Table 4.

Expression patterns in synonym sets.

Category		Explanation	Number
Expression patterns in Japanese	Transliteration variants	Pairs of synonyms with different Japanese transliterations	19
	Different Japanese spellings with the same meaning	Pairs of synonym that are different but synonymous. It also includes conversion of character types such as Kanji-hiragana conversion	296
	Japanese shortened forms	Only removing strings when converting one word to the other in synonym pairs	115
	Conversion to transliteration	Pairs of synonyms consisting of an original Japanese word and its transliteration in Japanese	146
	Plural expressions	A synonym set including plural synonyms	453
		Total	1029
English terms		Pairs of synonyms comprising a Japanese original word and its corresponding English terms	1029
English acronyms		Pairs of synonyms of a Japanese original word and English acronyms	140