vitamin K1 vs phytonadione

vitamin K1 and phytonadione both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitamin K1	Yes	No	No	No
phytonadione	Yes	No	No	No

As nouns, vitamin K1 and phytonadione are synonyms defined as:

vitamin K1 and phytonadione: a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent

Other synonyms of vitamin K1 include phylloquinone.

vitamin K1 (noun)	phytonadione (noun)
a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent	a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent