20Which of the following statements is true?
(A)Piglet is a hyponym of pig.
(B)Eat and dinner are co-hyponyms.
(C)Finger and hand are synonyms.
(D)Pear and pale are homographs.

(A)Piglet is a hyponym of pig. V

superordinate上位詞 & hyponym下位詞：指概念範圍或較狹隘的關係。

例如：家具（furniture）概念較廣泛為上位詞；床（bed）概念較狹隘為下位詞。

(B)Eat and dinner are co-hyponyms.  X

co-hyponym共同下位詞：指多個下位詞擁有同一個上位詞。

例如：家具（furniture）概念中可包含三種項目，床（bed）沙發（sofa）、鞋櫃（shoe cabinet），那這三種就都在同一位階，就是共同下位詞。

(C)Finger and hand are synonyms.  X

synonym：同義詞

(D)Pear and pale (a. 蒼白) are homographs.  X 

homograph (同形異義字)：A word that is spelled like another but has a different sound and meaning.

bookn(n.) 書 book (v.) 預定 book the hotel 

hyponym: 一個類別下的小分支，例如spoon是cutlery的hyponym.
synonym:同義詞
homograph: 同形異義

https://en.wikipedia.org/wiki/Hyponymy_and_hypernymy