cladistic analysis vs cladistics

cladistic analysis and cladistics both are nouns.

Word	Noun	Adjective	Verb	Adverb
cladistic analysis	Yes	No	No	No
cladistics	Yes	No	No	No

As nouns, cladistic analysis and cladistics are synonyms defined as:

cladistic analysis and cladistics: a taxonomic system of classifying species based on the branching patterns of cladograms that are built to infer phylogenetic relations

cladistic analysis (noun)	cladistics (noun)
a taxonomic system of classifying species based on the branching patterns of cladograms that are built to infer phylogenetic relations	a taxonomic system of classifying species based on the branching patterns of cladograms that are built to infer phylogenetic relations