Subjective = Ti-valuing
Objective = Te-valuing
Merry = Fe-valuing
Serious = Fi-valuing
at least, this is how i've always understood it. so for example, when you refer to "Merry", you're referring to the fact that the type values Fe, and when you refer to "Subjective", you're referring to the fact that the type values Ti. of course, when you refer to one you imply the other by default, since you can't separate Fe-valuing from Ti-valuing, etc.