Corporations ordinarily have two classes of stock: common and preferred.
RG-6 and RG-59 are the most common types
the two basic types of diseases are viral and bacterial
nominal and ordinal is wrong; those are the two types of qualitative variables. Ratio and interval are the two types of quantitative variables.
It would be easier to answer, if you explained what the 'two types of coding' were.
outside cloverleafinside cloverleafmodified cloverleafsimpleetc.
inter change able parts are those whos parts can be changed.
The two most common types of compressors are the positive-displacement and the velocity or dynamic.
The two types of law are common and statutory.
interstate and us
The two types of law are common and statutory.
Auxiliary Interstate Highways and Primary Interstate Highways
The two most common triads are the Major and the minor triad. The other two types of triads are diminished and augmented triads.
Common and Prefered
amoeba and paramecium are two common types of protozoan
Two types of nouns are common and proper nouns.
Two types of nouns are common and proper nouns.