firewood – noun panggatong kahoy
firework
firework – noun paputok kuwitis
firm
firm – adjective matatag matigas
firmness
firmness – noun katigasan katatagan
first
first – adjective una pang-una
first aid
first aid – noun paunang lunas pangunahing lunas
first class
first class – adjective primera klase
First Lady
First Lady – noun unang ginang