chafing vs intertrigo

chafing and intertrigo both are nouns.

Word	Noun	Adjective	Verb	Adverb
chafing	Yes	No	No	No
intertrigo	Yes	No	No	No

As nouns, intertrigo is a hyponym of chafing; that is, intertrigo is a word with a more specific, narrower meaning than chafing:

chafing: soreness or irritation of the skin caused by friction
intertrigo: chafing between two skin surfaces that are in contact (as in the armpit or under the breasts or between the thighs)

chafing (noun)	intertrigo (noun)
soreness or irritation of the skin caused by friction	chafing between two skin surfaces that are in contact (as in the armpit or under the breasts or between the thighs)