conflagrate vs catch fire

conflagrate and catch fire both are verbs.

Word	Noun	Adjective	Verb	Adverb
conflagrate	No	No	Yes	No
catch fire	No	No	Yes	No

As verbs, conflagrate and catch fire are synonyms defined as:

Other synonyms of conflagrate include combust, erupt, ignite, take fire.

conflagrate (verb)	catch fire (verb)
start to burn or burst into flames	start to burn or burst into flames
cause to start burning