apart

adj adv (postpositive) 1. to pieces or in pieces, he had the television apart on the floor

2. placed or kept separately or to one side for a particular purpose, reason, etc; aside (esp in the phrases setor put apart)

3. separate in time, place, or position; at a distance, he stood apart from the group, two points three feet apart

4. not being taken into account; aside, these difficulties apart, the project ran smoothly

5. individual; distinct; separate, a race apart

6. separately or independently in use, thought, or function, considered apart, his reasoning was faulty

7. apart from (preposition) besides; other than

Yes if you look for deffinition in a dictionary, it say so.

behind /bɪˈhaɪnd/prep

1. in or to a position further back than; at the rear of; at the back of
2. in the past in relation to: I've got the exams behind me now
3. late according to; not keeping up with: running behind schedule
4. concerning the circumstances surrounding: the reasons behind his departure

adv

1. in or to a position further back; following
2. remaining after someone's departure: he left it behind
3. in debt; in arrears: to fall behind with payments

adj

1. (postpositive) in a position further back; retarded: the man behind prodded me

n

1. informal the buttocks
2. a score of one point made by kicking the ball over the behind linebetween a goalpost and one of the smaller outer posts (behind posts)

porosity

n (pl -ties ) 1. the state or condition of being porous 2. geology, the ratio of the volume of space to the total volume of a rock

From Medieval Latin porōsitās, from Late Latin porus pore²

pore

vb (intr) 1. (foll by over) to make a close intent examination or study (of a book, map, etc) he pored over the documents for several hours

2. (foll by over, on, or upon) to think deeply (about)

3. (foll by over, on, or upon rare) to look earnestly or intently (at); gaze fixedly (upon)

pore 2

n anatomy zoology 1. any small opening in the skin or outer surface of an animal

2. botany, any small aperture, esp that of a stoma through which water vapour and gases pass

3. any other small hole, such as a space in a rock, soil, etc

void

adj 1. without contents; empty

2. not legally binding, null and void

3. (of an office, house, position, etc) without an incumbent; unoccupied

4. (postpositive; foll by of) destitute or devoid, void of resources

5. having no effect; useless, all his efforts were rendered void

6. (of a card suit or player) having no cards in a particular suit, his spades were void

n 1. an empty space or area, the huge desert voids of Asia

2. a feeling or condition of loneliness or deprivation

3. a lack of any cards in one suit, to have a void in spades

vb (mainly tr) 1. to make ineffective or invalid

2. to empty (contents, etc) or make empty of contents

3. (also intr) to discharge the contents of (the bowels or urinary bladder)