train vs aim

train and aim both are nouns.

Word	Noun	Adjective	Verb	Adverb
train	Yes	No	Yes	No
aim	Yes	No	Yes	No

As verbs, train and aim are synonyms defined as:

train and aim: point or cause to go (blows, weapons, or objects such as photographic equipment) towards

Other synonyms of train include direct, take, take aim.

As verbs, aim is a hyponym of train; that is, aim is a word with a more specific, narrower meaning than train:

train: point or cause to go (blows, weapons, or objects such as photographic equipment) towards
aim: intend (something) to move towards a certain goal

Other hyponyms of train include direct, place, point, target, draw a bead on, hold, turn, swing, charge, level, point, level, sight.

train (noun)	aim (noun)
public transport provided by a line of railway cars coupled together and drawn by a locomotive	the action of directing something at an object
wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed	an anticipated outcome that is intended or that guides your planned actions
piece of cloth forming the long back section of a gown that is drawn along the floor	the goal intended to be attained (and which is believed to be attainable)
a series of consequences wrought by an event	the direction or path along which something moves or along which it lies
a procession (of wagons or mules or camels) traveling together in single file
a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding

train (verb)	aim (verb)
exercise in order to prepare for an event or competition	have an ambitious plan or a lofty goal
undergo training or instruction in preparation for a particular role, function, or profession	propose or intend
create by training and teaching	specifically design a product, event, or activity for a certain public
teach and supervise (someone); act as a trainer or coach (to), as in sports	direct (a remark) toward an intended goal
point or cause to go (blows, weapons, or objects such as photographic equipment) towards	move into a desired direction of discourse
drag loosely along a surface; allow to sweep the ground	point or cause to go (blows, weapons, or objects such as photographic equipment) towards
travel by rail or train	intend (something) to move towards a certain goal
educate for a future role or function
teach or refine to be discriminative in taste or judgment
develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control
cause to grow in a certain way by tying and pruning it