actinon vs grouping

actinon and grouping both are nouns.

Word	Noun	Adjective	Verb	Adverb
actinon	Yes	No	No	No
grouping	Yes	No	No	No

As nouns, grouping is a hypernym of actinon; that is, grouping is a word with a broader meaning than actinon:

actinon: any of a series of radioactive elements with atomic numbers 89 through 103
grouping: any number of entities (members) considered as a unit

Other hypernyms of actinon include group.

actinon (noun)	grouping (noun)
any of a series of radioactive elements with atomic numbers 89 through 103	any number of entities (members) considered as a unit
	the activity of putting things together in groups
	a system for classifying things into groups