对偶词的英语怎么说

对偶词的英文：
alliterating word

They must each compose a poem in strict alliterative metre.
他们必须每人作一首严格押头韵的诗。

The prosody of Beowulf is based on alliteration, not end rhymes.
《贝奥武甫》的诗体采用头韵而不用尾韵。

It seems to me that in prose alliteration should be used only for a special reason.
依我看，在散文里，头韵只能在一定的场合使用。

There is an
在apple这个词中有一个字母A。

This is a derivative word.
这是一个衍生词。

This is an informal word.
这是一种口语用语。

Bitter words and good acupuncture—to advise with faithful words.
苦语针砭。

The German word `Haus' is cognate with the English word `house'.
德语的haus一词和英语的house一词同源.