Seems is a regular neuter verb, from seem, seemed, seeming, seemed; found in the indicative mood, present tense, third person, and singular number. 1.  A verb is a word that signifies to be, to act, or to be acted upon. 2.  A regular verb is a verb that forms the preterit and the perfect participle by assuming d or ed. 3.  A neuter verb is a verb that expresses neither action nor passion, but simply being, or a state of being. 4.  The indicative mood is that form of the verb, which simply indicates or declares a thing, or asks a question. 5.  The present tense is that which expresses what now exists, or is taking place. 6.  The third person is that which denotes the person or thing merely spoken of. 7.  The singular number is that which denotes but one. Essential is a common adjective, compared by means of the adverbs; essential, more essential, most essential; or, essential, less essential, least essential. 1.  An adjective is a word added to a noun or pronoun, and generally expresses quality. 2.  A common adjective is any ordinary epithet, or adjective denoting quality or situation. 3.  Those adjectives which may be varied in sense, but not in form, are compared by means of adverbs.

To is a preposition. 1.  A preposition is a word used to express some relation of different things or thoughts to each other, and is generally placed before a noun or a pronoun.

Happiness is a common noun, of the third person, singular number, neuter gender, and objective case. 1.  A noun is the name of any person, place, or thing, that can be known or mentioned. 2.  A common noun is the name of a sort, kind, or class, of beings or things. 3.  The third person is that which denotes the person or thing merely spoken of. 4.  The singular number is that which denotes but one. 5.  The neuter gender is that which denotes things that are neither male nor female. 6.  The objective case is that form or state of a noun or pronoun which usually denotes the object of a verb, participle, or preposition.

Because is a conjunction. 1.  A conjunction is a word used to connect words or sentences in construction, and to show the dependence of the terms so connected.

Properly is an adverb. 1.  An adverb is a word added to a verb, a participle, an adjective, or an other adverb; and generally expresses time, place, degree, or manner.

Speaking is a participle. 1.  A participle is a word derived from a verb, participating the properties of a verb, and of an adjective or a noun; and is generally formed by adding ing, d, or ed, to the verb.

That is a pronominal adjective, not compared; standing for that thing, in the third person, singular number, neuter gender, and nominative case. [See OBS. 14th, p. 290.] 1.  An adjective is a word added to a noun or pronoun, and generally expresses quality. 2.  A pronominal adjective is a definitive word which may either accompany its noun, or represent it understood. 3.  The third person is that which denotes the person or thing merely spoken of. 4.  The singular number is that which denotes but one. 5.  The neuter gender is that which denotes things that are neither male nor female. 6.  The nominative case is that form or state of a noun or pronoun, which usually denotes the subject of a finite verb.