/ˈfluːd/ [countable/uncountable noun] a liquid - used especially in technical contexts
In extreme heat your body will lose fluid and salt.
/ˈlɪkwd/ [countable/uncountable noun] a substance, such as water or milk, that is not a solid and not a gas
المصطلحان بنفس المعنى ولكن fluid تستخدم في سياقات فنية