interpose vs throw in

interpose and throw in both are verbs.

Word	Noun	Adjective	Verb	Adverb
interpose	No	No	Yes	No
throw in	No	No	Yes	No

As verbs, interpose and throw in are synonyms defined as:

Other synonyms of interpose include come in, inject, interject, put in.

interpose (verb)	throw in (verb)
to insert between other elements	to insert between other elements
to put forth by way of intervention	give up in the face of defeat of lacking hope; admit defeat
be or come between	add as an extra or as a gratuity
get involved, so as to alter or hinder an action, or through force or threat of force