hostile expedition vs military expedition

hostile expedition and military expedition both are nouns.

Word	Noun	Adjective	Verb	Adverb
hostile expedition	Yes	No	No	No
military expedition	Yes	No	No	No

As nouns, hostile expedition and military expedition are synonyms defined as:

hostile expedition and military expedition: a military campaign designed to achieve a specific objective in a foreign country

Other synonyms of hostile expedition include expedition.

hostile expedition (noun)	military expedition (noun)
a military campaign designed to achieve a specific objective in a foreign country	a military campaign designed to achieve a specific objective in a foreign country