Which of these analogies is an antonym analogy?
crutches are to walk as shoes are to run
red is to rose as white is to snow
destroy is to build as arrival is to departure
smile is to grin as pout is to frown

so whats the question?

there is 2 main differences, basically which are the users and the market. the other difference is the kind of content

people who use tik tok are mainly people from east asia, kind of like the app douyin. musically, on the other hand, are used by people from america or european countries.

while tik tok videos show things like daily life videos, comedy, or just funny videos, musically are like people mimicking songs with their own actions, 'imitate' singers and video clips.

hope this !