crawfish vs pull in one's horns

crawfish is a noun but pull in one's horns is not a noun.

Word	Noun	Adjective	Verb	Adverb
crawfish	Yes	No	Yes	No
pull in one's horns	No	No	Yes	No

As verbs, crawfish and pull in one's horns are synonyms defined as:

crawfish and pull in one's horns: make a retreat from an earlier commitment or activity

Other synonyms of crawfish include back away, back out, crawfish out, pull back, retreat, withdraw.

crawfish (noun)	pull in one's horns (noun)
large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
small freshwater decapod crustacean that resembles a lobster
tiny lobster-like crustaceans usually boiled briefly

crawfish (verb)	pull in one's horns (verb)
make a retreat from an earlier commitment or activity	make a retreat from an earlier commitment or activity