[1]
The Arabic word yaqteen applies to a tree which does not stand on a stem but grows and spreads like a creeper, e.g. a pumpkin, cucumber, water-melon, etc. In any case, a creeper was produced miraculously, so that its leaves should provide shade to the Prophet Jonah and its fruit should serve him both as food and as shade.
[2]
The Arabic word used isayat(singularayah). Ayahmeans ‘sign’ or ‘proof’. It is also used to denote the unit of text in the Qur’an,like ‘verse’ in poetry or ‘sentence’ in prose.Each such unit isconsidered a ‘sign’from God.