expression
although there are many; many as there are
Fixed literary expression meaning 'although there are many (of something)'. Often used in set phrases like 数あれど~ない to emphasize rarity or uniqueness.
星は数あれど、これほど美しい星はない。
Though there are many stars, none is as beautiful as this one.
辞書は数あれど、この辞書ほど詳しいものはない。
There are many dictionaries, but none is as detailed as this one.